Emerson Rosemount 935 Quick Start Manual page 23

April 2021
2.3 Verify signal
Use an RS-485 or HART
accordance with
Figure 2-1: Light-Emitting Diode (LED) Indication Before Zero
Calibration
1. Verify LED indication.
2. Use Winhost or HART
2.3.1 Signal limitation values
Table 2-1: Maintenance Channels' Limits
Channel
Reference
Signal
Ratio
NQRat
Lower explosive limit (LEL)
Temperature
Voltage
Note
The installation information refers to the installation distance.
Minimum The minimum distance, as defined according to the model
Medium
Quick Start Guide
®
Field Communicator to verify the signal in
Table 2-1.
®
to verify installation parameters.
number.
Half the maximum distance, as defined according to the
model number.
Installation distance
Minimum Medium
1 V gain 1 1 V gain 2
1 V gain 1 1 V gain 2
0.6 - 1.4 0.6 - 1.4
0.98 - 1.02
0 LEL x m
Up to 25 °C beyond ambient temperature
32 Vdc > V > 18 Vdc
Quick Start Guide
Maximum
1 V gain 5
1 V gain 5
0.6 - 1.4
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