Honeywell ST 3000 Installation Guide

2.1 Connecting Power and SCT/SFC, Continued
CAUTION
Do not try to remove the transmitter housing end-cap before loosening the
end-cap lock on the transmitter housing.
Table 1 Connecting Power Supply and SFC to ST 3000
Step Action
1
Use a 1.5 mm allen wrench to loosen the end-cap lock on the
terminal side of the transmitter housing. Unscrew and remove the
end cap from the housing
2
If the transmitter is supplied with an optional integral analog meter,
unsnap the meter from the terminal block to expose the wiring
connections.
3
Observing polarity, connect a 25 Vdc power supply to the
transmitter’s SIGNAL terminals as shown in Figure 1.
ATTENTION
Be sure there is a minimum of 250 ohms resistance
between the power supply and the transmitter.
4
Connect the SCT or SFC to the transmitter - red lead to SIGNAL
positive and black lead to SIGNAL negative. See Figure 1.
5
• If you are using the SCT, Select Tag ID icon from the SCT
toolbar to establish on-line commnications with the transmitter.
• If you are using the SFC, go to Section 2.2.
Figure 1 Typical Power Supply and SCT/SFC Connections to ST 3000.
Easy connect terminals
for direct SCT or SFC
connections
-
S
I
G
N
A
L
+
+
-
T
E
S
T
Ω
250
25 Vdc
Power
Supply
+
-
+ Red
- Black
ST 3000
SCT
SFC
6 ST 3000 Release 300 Installation Guide 2/05

Honeywell ST 3000 Specifications

General

Manufacturer	Honeywell
Category	Transmitter
Stability	±0.01% of URL per year
Operating Temperature	-40 to 85°C (-40 to 185°F)
Communication Protocol	HART
Housing Material	Aluminum or Stainless Steel
Enclosure Rating	IP66/67, NEMA 4X
Measurement Type	Gauge, Absolute, Differential
Output Signal	4-20 mA, HART
Process Temperature	-40 to 121°C (-40 to 250°F)
Hazardous Area Approvals	FM, CSA, ATEX, IECEx
Process Connection	1/2" NPT
Material	316L Stainless Steel, Hastelloy C