I-87004W
4-port Digital Temperature Sensor Module with Daisy-Chain Wiring |
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| Model: I-87004W |
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- 4-Port DS18B20 Sensor Input Module
- 2/3-wire DS18B20 Wire Connection
- Max 20 Sensors per Port
- Max. Distance of 100 m per Port when using Daisy-Chain Wiring
- Measures Temperatures from -55 to +125°C
- ±0.5°C Accuracy from -10 to +85°C
- 4 kV ESD Protection
- 3000 VDC Intra-module Isolation, Field to Logic
- RoHS Compliant
- Wide Operating Temperature Range: -25 to +75°C
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The I-87004W is a digital temperature sensor module that provides four ports for 2- or 3 wire DS18B20 digital temperature sensor input. The DS18B20 temperature sensor has a high accuracy of ±0.5°C when measuring temperatures between -10 and + 85°C, with a total measurement range of between -55 and +125°C. Up to 20 DS18B20 sensors can be connected to each port on the I-87004W module in a daisy-chain arrangement with a maximum wiring distance of 100 meters. The I-87004W module is fully RoHS compliant, and features 4 kV ESD protection as well as 3000 VDC intra-module isolation. |
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- Temperature Measurement
- Environment Monitoring
- Tunnel Monitoring
- Building Monitoring
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| Temperature Measurement |
| Port |
4 |
| Wiring |
2-wire or 3-wire |
| Sensor Type |
DS18B20 |
| Temperature Measurement Range |
-55°C to +125°C |
| Resolution |
12-bit |
| Accuracy |
±0.5°C (See Note 1) |
| Sampling Rate |
1 Hz |
| Number of Sensors per Port |
20 |
| Sensor Wiring Length |
Max. 100 m per Port |
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| Note 1: ±0.5°C accuracy only applies for measurements between -10°C and +85°C |
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| Communication |
| Interface |
RS-485 |
| Format |
N81, N82, E81, O81 |
| Baud Rate |
1200 to 115200 bps |
| Protocol |
DCON |
| Dual Watchdog |
Yes, Module (1.6 Seconds), Communication (Programmable) |
| LED Indicators/Display |
| System LED Indicator |
Yes, 1 as Power/Communication Indicator |
| I/O LED Indicator |
- |
| Isolation |
| Intra-module Isolation, Field-to-Logic |
3000 VDC |
| EMS Protection |
| ESD (IEC 61000-4-2) |
±4 kV Contact for each Terminal |
| ±8 kV Air for Random Point |
| Power |
| Power Consumption |
0.5 W Max. |
| Mechanical |
| Dimensions (L × W × H) |
115 mm x 30 mm x 102 mm |
| Environment |
| Operating Temperature |
-25 to +75°C |
| Storage Temperature |
-30 to +80°C |
| Humidity |
10 to 90% RH, Non-condensing |
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| I-87004W CR |
4-Port Digital Temperature Sensor Module with Daisy-Chain Wiring (RoHS) |
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| SG-770 CR |
7-channel Differential or 14-channel Single-ended Surge Protector (RoHS) |
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