Panametrics Sentinel, Руководство пользователя, Страница: 33 / 166

Sentinel™ User’s Manual 23
Chapter 1. Installation
1.8.9 Wiring the Std 0/4-20 mA Analog Output
The standard configuration of the flow transmitter includes two isolated 0/4-20 mA analog outputs (designated as
outputs
1
and
2
on the hardware, corresponding to outputs
A
and
B
in the software). Connections to these outputs
may be made with standard twisted-pair wiring, but the current loop impedance for these circuits must not exceed
600 ohms. To wire the analog outputs, complete the following steps:
1. Disconnect the main power to the flowmeter and remove the enclosure #1 rear cover.
2. Install the required cable clamp in the chosen conduit hole on the side of the electronics enclosure.
3. Refer to Figure 20 on page xxxviii for the location of the J1 terminal block and wire the analog outputs as shown.
Secure the cable clamp.
4. If wiring of the unit has been completed, reinstall the rear cover on the enclosure and tighten the set screw.
After the Sentinel has been completely installed and wired, proceed to Chapter 2, Initial Setup , to program the
flowmeter.
WARNING!
To meet CE Mark requirements, all cables must be installed as described in Appendix A,
CE Mark Compliance .
WARNING!
Make sure both covers, with their o-ring seals, are installed, and the set screws
tightened, before applying power in a hazardous environment.