User's Manual

VPx Sensor User Manual 15
Mesa Labs, Inc.
12100 W. 6th Avenue
Lakewood, CO 80228 USA
Tel: [phone]
monitoring.mesalabs.com
[e-mail]
Connections for 4-20 ma, 5v, 10v and 30v Inputs:
Channel
Pin
Description
1 & 2
1
Not connected
2
4-20 ma in; 5,10,20,30v in
3
Ground
4
Not connected
Table 6-3 VPx Sensor 4-20 ma, 5v, 10v and 30v Inputs
7.0 Specs
All specs below are estimated ranges for the particular inputs. Please refer to the probe specific
documentation for the exact ranges and tolerances.
7.1 RTD
The VPx sensor utilizes (2) 1,000 Ohm RTDs to cover -200°C to +140°C
4-Wire RTD – (P/N CM-000188)
Range: -90°C to +140°C
Tolerance: ±0.5°C @ -25°C to +45°C (±1.0°C @ -90°C to -26°C and +46°C to +140°C)
4-Wire Cryo RTD – (P/N CM-000189)
Range: -200°C to +70°C
Tolerance: ±1.0°C over full operating range
7.2 Temperature and Humidity
VPx monitors temperature and humidity with an external probe.
Temperature and Humidity Probe – (P/N 72112)
Range: +5°C to 40°C and 10% RH to 90% RH
Accuracy: ±0.5°C and ±3% RH
7.3 Power
VPx sensor makes use of a 5V 1A AC/DC Wall Mount Adapter (TWA22 – Power Supply)