M-7004-G
4- Port Digital Temperature Sensor Module with Daisy-Chain Wiring using the DCON and Modbus Protocols (Gray Cover) (RoHS)
Features
ICP DAS USA’s M-7004-G is a digital temperature sensor module is equipped with four ports for 2- or 3 wire DS8B20 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 M-7004-G module when daisy-chained with a maximum wiring distance of 100 meters. The M-7004-G module is fully RoHS compliant, and features 4 kV ESD protection as well as 3000 VDC intra-module isolation.
- 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
Applications
- Temperature Measurement
- Environment Monitoring
- Tunnel Monitoring
- Building Monitoring

Specifications
System Specifications
Communication
Interface
RS-485
Format
N, 8, 1
Baud Rate
1200 ~ 115200 bps
Protocol
Modbus RTU/DCON
Bias Resistor
Yes, 1k Ω bias resistor by Jumper selectable
Dual Watchdog
Yes, Module (1.6 Seconds), Communication (Programmable)
LED Indicator/Display
System LED Indicator
Yes, 1 LED 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
EFT (IEC 61000-4-4)
±4 kV for Power
Surge (IEC 61000-4-5)
±2 kV for power liner
Power
Reverse Polarity Protection
Yes
Input Voltage Range
+10 ~ +48 VDC
Consumption
0.5 W
Mechanical
Dimensions (W x L x H)
123 mm x 72 mm x 35 mm
Installation
DIN-Rail
Environment
Operating Temperature
-25°C ~ +75°C
Storage Temperature
-30°C ~ +80°C
Humidity
10 ~ 95% RH, Non-condensing
I/O Specifications
Analog Input
Channels
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