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Refrigerant leak monitor (gas sensor) · BACnet points list
MSA Safety Chillgard 5000 refrigerant monitor (BACnet MS/TP) BACnet points list
Updated 12 November 2026
The Chillgard 5000 samples up to 16 points for refrigerant (or ammonia) and reports over Modbus RTU or BACnet MS/TP. Every BACnet object is an Analog Input: unit status and firmware, then four objects per channel (gas code, concentration in ppm, status flags, reserved) and calibration dates. Acknowledge and reset are done by writing to two of the Analog Inputs.
This page lists 122 BACnet objects for the MSA Safety Chillgard 5000 refrigerant monitor (BACnet MS/TP) — 2 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from MSA Safety’s own free documentation, linked below.
- Manufacturer
- MSA Safety
- Model
- Chillgard 5000 refrigerant monitor (BACnet MS/TP)
- Equipment
- Refrigerant leak monitor (gas sensor)
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 122 (2 writable)
- Transport
- BACnet MS/TP
- Firmware
- Not stated
- Also known as
- Chillgard 5000, Chillgard 5000 BACnet, MSA Chillgard, 10178535
Reference only, provided as-is: verify against MSA Safety’s current documentation and the live device before use. Not official MSA Safety information. Terms of use.
BMS integration notes: MSA Safety Chillgard 5000 refrigerant monitor (BACnet MS/TP)
Select BACnet on the Outputs > Digital screen and set the MAC address, instance number and baud. Read the unit status and, for each sample point in use, the gas concentration and channel status; write the ACK and RESET objects to acknowledge or clear alarms from the BMS.
Minimum points to map
The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.
| Object | Name | Why | Access |
|---|---|---|---|
| AI 7 | ACK button | Write 1 to acknowledge alarms | Write |
| AI 8 | RESET button | Reset code: HiByte action, LoByte channel | Write |
| AI 6 | Unit Status | Unit status bits (operating, fault, alarm) | Read |
| AI 10 | 1 Gas Conc. | Channel 1 refrigerant level, ppm | Read |
| AI 11 | 1 Status | Channel 1 status bits (caution/warning/alarm) | Read |
| AI 9 | 1 Gas Number | Channel 1 gas type code | Read |
Network setup
- BACnet MS/TP over RS-485: choose BACnet on the Outputs > Digital tab, then set MAC Address, Instance Number and baud rate on the unit.
- Digital output is either Modbus RTU or BACnet MS/TP, not both.
Watch out for
- RESET button (AI 8) takes a two-byte code: HiByte 0 = alarms, 1 = faults, 2 = common faults, 3 = all; LoByte = channel 0-15 or 255 for all.
- Status values are bit-coded; decode them in the BMS rather than treating them as a single state.
- Calibration times are day counts since 1 January 1970.
MSA Safety Chillgard 5000 refrigerant monitor (BACnet MS/TP) BACnet objects
Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AI | 0 | Product ID | Product code, reads "CG" | Read | ||
| AI | 1 | Firmware Version 1 | Firmware build / major / minor | Read | ||
| AI | 2 | Firmware Version 2 | Firmware build | Read | ||
| AI | 3 | Reserved | Reserved, reads 0 | Read | ||
| AI | 4 | Reserved | Reserved, reads 0 | Read | ||
| AI | 5 | Most Recent Measured Channel | Last channel sampled | Read | ||
| AImin | 6 | Unit Status | Unit status bit flags | Read | ||
| AImin | 7 | ACK button | Write 1 to acknowledge | Write | ||
| AImin | 8 | RESET button | Reset alarms / faults (HiByte/LoByte code) | Write | ||
| AImin | 9 | 1 Gas Number | Channel 1 gas type code (0-46) | Read | ||
| AImin | 10 | 1 Gas Conc. | Channel 1 gas concentration | ppm | Read | |
| AImin | 11 | 1 Status | Channel 1 status bit flags | Read | ||
| AI | 12 | 1 Reserved | Reserved, reads 0 | Read | ||
| AI | 13 | 2 Gas Number | Channel 2 gas type code (0-46) | Read | ||
| AI | 14 | 2 Gas Conc. | Channel 2 gas concentration | ppm | Read | |
| AI | 15 | 2 Status | Channel 2 status bit flags | Read | ||
| AI | 16 | 2 Reserved | Reserved, reads 0 | Read | ||
| AI | 17 | 3 Gas Number | Channel 3 gas type code (0-46) | Read | ||
| AI | 18 | 3 Gas Conc. | Channel 3 gas concentration | ppm | Read | |
| AI | 19 | 3 Status | Channel 3 status bit flags | Read | ||
| AI | 20 | 3 Reserved | Reserved, reads 0 | Read | ||
| AI | 21 | 4 Gas Number | Channel 4 gas type code (0-46) | Read | ||
| AI | 22 | 4 Gas Conc. | Channel 4 gas concentration | ppm | Read | |
| AI | 23 | 4 Status | Channel 4 status bit flags | Read | ||
| AI | 24 | 4 Reserved | Reserved, reads 0 | Read | ||
| AI | 25 | 5 Gas Number | Channel 5 gas type code (0-46) | Read | ||
| AI | 26 | 5 Gas Conc. | Channel 5 gas concentration | ppm | Read | |
| AI | 27 | 5 Status | Channel 5 status bit flags | Read | ||
| AI | 28 | 5 Reserved | Reserved, reads 0 | Read | ||
| AI | 29 | 6 Gas Number | Channel 6 gas type code (0-46) | Read | ||
| AI | 30 | 6 Gas Conc. | Channel 6 gas concentration | ppm | Read | |
| AI | 31 | 6 Status | Channel 6 status bit flags | Read | ||
| AI | 32 | 6 Reserved | Reserved, reads 0 | Read | ||
| AI | 33 | 7 Gas Number | Channel 7 gas type code (0-46) | Read | ||
| AI | 34 | 7 Gas Conc. | Channel 7 gas concentration | ppm | Read | |
| AI | 35 | 7 Status | Channel 7 status bit flags | Read | ||
| AI | 36 | 7 Reserved | Reserved, reads 0 | Read | ||
| AI | 37 | 8 Gas Number | Channel 8 gas type code (0-46) | Read | ||
| AI | 38 | 8 Gas Conc. | Channel 8 gas concentration | ppm | Read | |
| AI | 39 | 8 Status | Channel 8 status bit flags | Read | ||
| AI | 40 | 8 Reserved | Reserved, reads 0 | Read | ||
| AI | 41 | 9 Gas Number | Channel 9 gas type code (0-46) | Read | ||
| AI | 42 | 9 Gas Conc. | Channel 9 gas concentration | ppm | Read | |
| AI | 43 | 9 Status | Channel 9 status bit flags | Read | ||
| AI | 44 | 9 Reserved | Reserved, reads 0 | Read | ||
| AI | 45 | 10 Gas Number | Channel 10 gas type code (0-46) | Read | ||
| AI | 46 | 10 Gas Conc. | Channel 10 gas concentration | ppm | Read | |
| AI | 47 | 10 Status | Channel 10 status bit flags | Read | ||
| AI | 48 | 10 Reserved | Reserved, reads 0 | Read | ||
| AI | 49 | 11 Gas Number | Channel 11 gas type code (0-46) | Read | ||
| AI | 50 | 11 Gas Conc. | Channel 11 gas concentration | ppm | Read | |
| AI | 51 | 11 Status | Channel 11 status bit flags | Read | ||
| AI | 52 | 11 Reserved | Reserved, reads 0 | Read | ||
| AI | 53 | 12 Gas Number | Channel 12 gas type code (0-46) | Read | ||
| AI | 54 | 12 Gas Conc. | Channel 12 gas concentration | ppm | Read | |
| AI | 55 | 12 Status | Channel 12 status bit flags | Read | ||
| AI | 56 | 12 Reserved | Reserved, reads 0 | Read | ||
| AI | 57 | 13 Gas Number | Channel 13 gas type code (0-46) | Read | ||
| AI | 58 | 13 Gas Conc. | Channel 13 gas concentration | ppm | Read | |
| AI | 59 | 13 Status | Channel 13 status bit flags | Read | ||
| AI | 60 | 13 Reserved | Reserved, reads 0 | Read | ||
| AI | 61 | 14 Gas Number | Channel 14 gas type code (0-46) | Read | ||
| AI | 62 | 14 Gas Conc. | Channel 14 gas concentration | ppm | Read | |
| AI | 63 | 14 Status | Channel 14 status bit flags | Read | ||
| AI | 64 | 14 Reserved | Reserved, reads 0 | Read | ||
| AI | 65 | 15 Gas Number | Channel 15 gas type code (0-46) | Read | ||
| AI | 66 | 15 Gas Conc. | Channel 15 gas concentration | ppm | Read | |
| AI | 67 | 15 Status | Channel 15 status bit flags | Read | ||
| AI | 68 | 15 Reserved | Reserved, reads 0 | Read | ||
| AI | 69 | 16 Gas Number | Channel 16 gas type code (0-46) | Read | ||
| AI | 70 | 16 Gas Conc. | Channel 16 gas concentration | ppm | Read | |
| AI | 71 | 16 Status | Channel 16 status bit flags | Read | ||
| AI | 72 | 16 Reserved | Reserved, reads 0 | Read | ||
| AI | 90 | Next Cal Time | Next calibration due, days since 1970 | days | Read | |
| AI | 91 | Zero Cal Time | Last zero calibration, days since 1970 | days | Read | |
| AI | 92 | Span Cal Time #00 | Last span calibration for R-11, days since 1970 | days | Read | |
| AI | 93 | Span Cal Time #01 | Last span calibration for R-12, days since 1970 | days | Read | |
| AI | 94 | Span Cal Time #02 | Last span calibration for R-22, days since 1970 | days | Read | |
| AI | 95 | Span Cal Time #03 | Last span calibration for R-123, days since 1970 | days | Read | |
| AI | 96 | Span Cal Time #04 | Last span calibration for R-134A, days since 1970 | days | Read | |
| AI | 97 | Span Cal Time #05 | Last span calibration for R-401A, days since 1970 | days | Read | |
| AI | 98 | Span Cal Time #06 | Last span calibration for R-404A, days since 1970 | days | Read | |
| AI | 99 | Span Cal Time #07 | Last span calibration for R-407A, days since 1970 | days | Read | |
| AI | 100 | Span Cal Time #08 | Last span calibration for R-407C, days since 1970 | days | Read | |
| AI | 101 | Span Cal Time #09 | Last span calibration for R-407F, days since 1970 | days | Read | |
| AI | 102 | Span Cal Time #10 | Last span calibration for R-410A, days since 1970 | days | Read | |
| AI | 103 | Span Cal Time #11 | Last span calibration for R-422A, days since 1970 | days | Read | |
| AI | 104 | Span Cal Time #12 | Last span calibration for R-422D, days since 1970 | days | Read | |
| AI | 105 | Span Cal Time #13 | Last span calibration for R-427A, days since 1970 | days | Read | |
| AI | 106 | Span Cal Time #14 | Last span calibration for R-507A, days since 1970 | days | Read | |
| AI | 107 | Span Cal Time #15 | Last span calibration for R-513A, days since 1970 | days | Read | |
| AI | 108 | Span Cal Time #16 | Last span calibration for R-514A, days since 1970 | days | Read | |
| AI | 109 | Span Cal Time #17 | Last span calibration for R-1233zd(E), days since 1970 | days | Read | |
| AI | 110 | Span Cal Time #18 | Last span calibration for R-1234yf, days since 1970 | days | Read | |
| AI | 111 | Span Cal Time #19 | Last span calibration for R-1234ze, days since 1970 | days | Read | |
| AI | 112 | Span Cal Time #20 | Last span calibration for USER Gas 1, days since 1970 | days | Read | |
| AI | 113 | Span Cal Time #21 | Last span calibration for USER Gas 2, days since 1970 | days | Read | |
| AI | 114 | Span Cal Time #22 | Last span calibration for USER Gas 3, days since 1970 | days | Read | |
| AI | 115 | Span Cal Time #23 | Last span calibration for USER Gas 4, days since 1970 | days | Read | |
| AI | 116 | Span Cal Time #24 | Last span calibration for USER Gas 5, days since 1970 | days | Read | |
| AI | 117 | Span Cal Time #25 | Last span calibration for USER Gas 6, days since 1970 | days | Read | |
| AI | 118 | Span Cal Time #26 | Last span calibration for Ammonia, days since 1970 | days | Read | |
| AI | 119 | Span Cal Time #27 | Last span calibration for R-21, days since 1970 | days | Read | |
| AI | 120 | Span Cal Time #28 | Last span calibration for R-23, days since 1970 | days | Read | |
| AI | 121 | Span Cal Time #29 | Last span calibration for R-32, days since 1970 | days | Read | |
| AI | 122 | Span Cal Time #30 | Last span calibration for R-125, days since 1970 | days | Read | |
| AI | 123 | Span Cal Time #31 | Last span calibration for R-143A, days since 1970 | days | Read | |
| AI | 124 | Span Cal Time #32 | Last span calibration for R-152A, days since 1970 | days | Read | |
| AI | 125 | Span Cal Time #33 | Last span calibration for R-218, days since 1970 | days | Read | |
| AI | 126 | Span Cal Time #34 | Last span calibration for R-227, days since 1970 | days | Read | |
| AI | 127 | Span Cal Time #35 | Last span calibration for R-236FA, days since 1970 | days | Read | |
| AI | 128 | Span Cal Time #36 | Last span calibration for R-424A, days since 1970 | days | Read | |
| AI | 129 | Span Cal Time #37 | Last span calibration for R-426A, days since 1970 | days | Read | |
| AI | 130 | Span Cal Time #38 | Last span calibration for R-438A, days since 1970 | days | Read | |
| AI | 131 | Span Cal Time #39 | Last span calibration for R-448A, days since 1970 | days | Read | |
| AI | 132 | Span Cal Time #40 | Last span calibration for R-449A, days since 1970 | days | Read | |
| AI | 133 | Span Cal Time #41 | Last span calibration for R-452B, days since 1970 | days | Read | |
| AI | 134 | Span Cal Time #42 | Last span calibration for R-455A, days since 1970 | days | Read | |
| AI | 135 | Span Cal Time #43 | Last span calibration for R-508B, days since 1970 | days | Read | |
| AI | 136 | Span Cal Time #44 | Last span calibration for R-454B, days since 1970 | days | Read | |
| AI | 137 | Span Cal Time #45 | Last span calibration for R-466A, days since 1970 | days | Read | |
| AI | 138 | Span Cal Time #46 | Last span calibration for R-515B, days since 1970 | days | Read |
No points match these filters.
Object ID lookup: MSA Safety Chillgard 5000 refrigerant monitor point IDs by name
AI0Product IDAI1Firmware Version 1AI2Firmware Version 2AI3ReservedAI4ReservedAI5Most Recent Measured ChannelAI6Unit StatusAI7ACK buttonAI8RESET buttonAI91 Gas NumberAI101 Gas Conc.AI111 StatusAI121 ReservedAI132 Gas NumberAI142 Gas Conc.AI152 StatusAI162 ReservedAI173 Gas NumberAI183 Gas Conc.AI193 StatusAI203 ReservedAI214 Gas NumberAI224 Gas Conc.AI234 StatusAI244 ReservedAI255 Gas NumberAI265 Gas Conc.AI275 StatusAI285 ReservedAI296 Gas NumberAI306 Gas Conc.AI316 StatusAI326 ReservedAI337 Gas NumberAI347 Gas Conc.AI357 StatusAI367 ReservedAI378 Gas NumberAI388 Gas Conc.AI398 StatusAI408 ReservedAI419 Gas NumberAI429 Gas Conc.AI439 StatusAI449 ReservedAI4510 Gas NumberAI4610 Gas Conc.AI4710 StatusAI4810 ReservedAI4911 Gas NumberAI5011 Gas Conc.AI5111 StatusAI5211 ReservedAI5312 Gas NumberAI5412 Gas Conc.AI5512 StatusAI5612 ReservedAI5713 Gas NumberAI5813 Gas Conc.AI5913 StatusAI6013 ReservedAI6114 Gas NumberAI6214 Gas Conc.AI6314 StatusAI6414 ReservedAI6515 Gas NumberAI6615 Gas Conc.AI6715 StatusAI6815 ReservedAI6916 Gas NumberAI7016 Gas Conc.AI7116 StatusAI7216 ReservedAI90Next Cal TimeAI91Zero Cal TimeAI92Span Cal Time #00AI93Span Cal Time #01AI94Span Cal Time #02AI95Span Cal Time #03AI96Span Cal Time #04AI97Span Cal Time #05AI98Span Cal Time #06AI99Span Cal Time #07AI100Span Cal Time #08AI101Span Cal Time #09AI102Span Cal Time #10AI103Span Cal Time #11AI104Span Cal Time #12AI105Span Cal Time #13AI106Span Cal Time #14AI107Span Cal Time #15AI108Span Cal Time #16AI109Span Cal Time #17AI110Span Cal Time #18AI111Span Cal Time #19AI112Span Cal Time #20AI113Span Cal Time #21AI114Span Cal Time #22AI115Span Cal Time #23AI116Span Cal Time #24AI117Span Cal Time #25AI118Span Cal Time #26AI119Span Cal Time #27AI120Span Cal Time #28AI121Span Cal Time #29AI122Span Cal Time #30AI123Span Cal Time #31AI124Span Cal Time #32AI125Span Cal Time #33AI126Span Cal Time #34AI127Span Cal Time #35AI128Span Cal Time #36AI129Span Cal Time #37AI130Span Cal Time #38AI131Span Cal Time #39AI132Span Cal Time #40AI133Span Cal Time #41AI134Span Cal Time #42AI135Span Cal Time #43AI136Span Cal Time #44AI137Span Cal Time #45AI138Span Cal Time #46
Integration notes
- From Appendix E "BACnet Objects" (manual pages 78-83). Channel objects run from AI 9 (channel 1) to AI 72 (channel 16), four per channel.
- Unit Status (AI 6) bits: 0x0001 warm-up, 0x0002 operating, 0x0004 calibration, 0x0008 fault, 0x0010 alarm.
- Channel Status bits: 0x0001 caution, 0x0002 warning, 0x0004 alarm, 0x0008 beacon, 0x0010 horn, 0x0020 new (unacknowledged), 0x0040 hold, 0x0080 fault.
- Gas Number codes are listed in section 18.5 (0 = R-11 ... 26 = Ammonia ... 46 = R-515B); the Span Cal Time objects follow the same order (#00 = R-11).
- ACK button (AI 7) and RESET button (AI 8) are Analog Inputs marked Write in the table.
- Channels that are not installed still occupy their object numbers.
Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the Chillgard 5000 refrigerant monitor (BACnet MS/TP) and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.
Questions about the MSA Safety Chillgard 5000 refrigerant monitor (BACnet MS/TP)
How many BACnet points does the MSA Safety Chillgard 5000 refrigerant monitor (BACnet MS/TP) have?
This list has 122 BACnet objects: 122 analog inputs. The exact set on a given unit depends on its firmware, installed options and configuration.
Which MSA Safety Chillgard 5000 refrigerant monitor (BACnet MS/TP) BACnet points are writable?
2 of the 122 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done.
Where is the official MSA Safety Chillgard 5000 refrigerant monitor (BACnet MS/TP) BACnet documentation?
The source is Chillgard 5000 Refrigerant Monitor Operating Manual (10178535/06), published free by MSA Safety at https://docs.msasafety.com/chillgard5000/en-us/Chillgard%205000/PDF/Chillgard5000_10178535.pdf.
What are the minimum BACnet points to integrate the MSA Safety Chillgard 5000 refrigerant monitor (BACnet MS/TP)?
Start with AI 7 ACK button (Write 1 to acknowledge alarms); AI 8 RESET button (Reset code: HiByte action, LoByte channel); AI 6 Unit Status (Unit status bits (operating, fault, alarm)); AI 10 1 Gas Conc. (Channel 1 refrigerant level, ppm); AI 11 1 Status (Channel 1 status bits (caution/warning/alarm)); AI 9 1 Gas Number (Channel 1 gas type code).
How do I check these points on the real Chillgard 5000 refrigerant monitor (BACnet MS/TP)?
Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.
Source: Chillgard 5000 Refrigerant Monitor Operating Manual · 10178535/06. Object names, instances and units are reproduced as published; descriptions are our own.