3595-1Q1 - 20 Channel Analogue Reed Relay IMP Replacement of 3595-1H IMP
The 3595-1Q1 is an enhanced version of the 3595-1C1, which includes 3 and 4 terminal resistance and RTD measurement facilities organised in a similar way to the original 3595-1H IMP. All 20 channels are available to use in pairs for the 3 and 4 wire measurement modes.
The channels of the 3595-1Q1 are fully programmable and so each 3 or 4 wire measurement takes up2 channels but leaves the rest available for other 3595-1C measurement modes are programmed using the same codes as a 3595-1H. The connector wiring for the 3 and 4 terminal resistance modes differs a little from the 3595-1H, but otherwise the 3595-1Q is compatible with the measurement modes of the 3595-1H analogue channels.
- Compatible Communications with 3595 series.
- Compatible enclosure and connector blocks.
- Thermocouple, resistance, RTD, voltage and current measurements in rugged enclosure.
- 20 Channels per Module – precision reed relay isolation. Individually programmable.
- Precision 3 and 4 wire resistance and RTD measurements. (3595-1Q1)
- Enhanced 14 to 19/20 bit resolution. 100 to 10 measurements per second.
- Enclosed connector blocks. Dual sensor accurate Cold Junction Compensation.
- Thermocouple health monitoring Temperatures in °C or °F unit.
Number of channels / module: 20/10
Number of poles / channel: 3/6
Connector type input channels: Standard 3595 series, Isothermal Enclosure, Screw Terminals.
Measurement modes: V DC (mV, DC, uVDC) Thermocouple CJC temperature, Sensor health.
Thermocouple types: K,J,T,R,S,E,B,N
Thermocouple compensation: Dual sensors
3595-1Q1 only: 3&4 wire resistance, 3&4 wire PT100.
Sensitivity ( 100R shunt fitted): <10nA
Accuracy as for voltage ranges + shunt accuracy.
Measurement resolutions supported:
- 19/20 bits at 9 measurements/s
- 18/19 bits at 20 measurements/s
- 17 bits at 30 measurements/s
- 17 bits at 40 measurements/s
- 15 bits at 80 measurements/s
- 14 bits at 100 measurements/s
- Number of bits includes sign counted as 1 bit.
50 Hz Mains frequency interference rejection is provided by 17 and 20 bit modes.
60 Hz mains interference rejection is provided by 17,19 and 20 bit modes.
Higher Measurement rates possible by disabling drift correct measurements.
Common mode rejection ratio channel group: <0.1uV/V
Single channel common mode rejection ratio: <1uV/V
Series mode rejection ratio 50 or 60 Hz +/- 0.05%: <1mv/V
Applies to 18,19,20 bit measurements.
DC channel common mode rejection ratio: <0.1uV/V
Maximum voltages operating:
Max. voltage between (+) and (-) inputs, same channel: +-12V
Maximum voltage between any two terminals: 200V
Note: reed scanners are not suitable for direct connection to power circuits.
Voltage measuring mode
Input voltage ranges:
Automatic range selection is supported.
DC measurement accuracy +/- 0.015% of reading + 0.01% of range + 4uV
Temperature coefficients DC voltage: 25ppm rdg + 0.1uV/o C
Measurement sensitivity 30mV range 18 bits: <0.25uV
Additional error at 80 & 100/sec mode 0.03% of range.
Channel overload protection: Passive 50V Continuous
For protection against transients and ground loops.
Isolation test voltage IMP to IMP or to SNET: Tested at 500V
Connector: Via SNET cable
Voltage: 11 to 48V
Current: <100mA at 12V, <50mA at 24V
Thermocouple Measurement Accuracy
Internal Cold junciton compensation errors included: (External compensation is also available)
|K||-100 to 500||0.05°C|
|500 to 1200||0.7|
|1200 to 1600||3.0|
|J||-50 to 360||0.5|
|360 to 800||0.7|
|T||-150 to 400||0.5|
|R||0 to 1600||2.0|
|S||0 to 1700||2.2|
|E||-50 to 290||0.7|
|290 to 1000||1.0|
|B||200 to 1600||4.5|
|N||-200 to 1600||1.3|
|-100 to 580||1.1.5|
|80 to 1300||1.3|
SNET Interface: SNET standard compatible
Status LED’s: 4
Function: Power, Communication, ADC fault, Calibration error
Safety: EN61010-1:2010, EN61010-2-30:2010
EMC: EN55011:2009, EN 61326-2-1:2006
Case size: 435*215*34.5mm
Protrusion of cable boots: 45mm
Operating Temperature Range: -20 to 70 °C
Relative Humidity(non condensing): 85% at 40°C
Vibration: 1g 10hz to 400Hz in 3 planes.
Programming storage: Secure flash memory
Calibration temperature is 21°C
Displayed sensitivity: <0.1oC
Thermocouple Health Monitoring automatic by resistance measurement sequence.