Dwyer 659TC - Manual

1.0 DESCRIPTION
user can re-con gure the transmitter parameters by use of a single push button and the range
“R” , menu “M” LEDS. Two methods of con guration are available, the rst “USER RANGING”
acts only on the transmitter range, similar to the previous 659TC-1 design. The other
method “ADVANCED USER CONFIGURATION” o ers full con guration. This level is entered by
by holding down the push button on power up. The advanced level has the following menus:-
• Menu 1 - Selection of input type, seven popular thermocouples or mV input.
• Menu 2 - Select either user push button set range or one of seven xed ranges.
• Menu 3 - Select either up or down scale output on sensor burnout.
• Menu 4 - User trim allow trim of output current at high and low range
• Menu 5 - Reset factory default.
The addition of xed ranges to this product allows the used to re-range the product without the
need for specialist equipment. The 659TC-1 input is isolated.
2.0 RECEIVING AND UNPACKING
Please inspect the packaging and instrument thoroughly for any signs of transit damage. If the
instrument has been damaged, please notify your supplier immediately.
3.0 SPECIFICATION @ 20 °C
INPUT
Sensor Range (°C ) y c a r u c c A
K -200 to 1370 ± 0.1% of F.S. ± 0.5 °C
(plus any sensor error)
J -100 to 1200 ± 0.1% of F.S. ± 0.5 °C
(plus any sensor error)
E -100 to 1000 ± 0.1% of F.S. ± 0.5 °C
(plus any sensor error)
N -180 to 1300 ± 0.1% of F.S. ± 0.5 °C
(plus any sensor error)
T -100 to 400 ± 0.2% of F.S. ± 0.5 °C
(plus any sensor error)
R -10 to 1760 ± 0.1% of F.S. ± 0.5 °C
(plus any sensor error) over range 800 to 1600
S -10 to 1760 ± 0.1% of F.S. ± 0.5 °C
(plus any sensor error) over range 800 to 1600
Range (mV)
mV e l a c s l l u f f o % 2 0 . 0 ± 0 7 o t 0 1 -
Isolation Tested to 250VDC
Sensor Burnout Either up or down scale output
Cold Junction Range -40 to 85 °C; Accuracy ± 0.5 °C
Tracking ± 0.05 °C / °C
Stability O set 0.1 °C / °C ; Span 0.05 °C / °C
OUTPUT
Type Two wire 4 to 20mA sink
Limits Low 3.8mA ; high 21.5mA
Accuracy (mA out / 2000) or 5uA which ever greater
Loop E ect ± 0.2 uA / V measured @ 50 Hz 1V (peak to peak)
Thermal Drift ± 1uA / °C typical ; ±1.5 uA Max
Max Load [(Vsupply – 10)/20] K Ω
GENERAL
Update Time 0.5 Seconds
Response Time 1 Second to reach 90% of nal value
Start up time From power up typically 5 Seconds
Filter Factor Adaptive
Ambient Temperature -40 to 85 °C
Connection Screw Terminal
Approval BS EN 61326 ; 1998 – Electrical equipment for measurement
and control ANNEX A ; ANNEX F
Factory Default 0 to 1000 °C type K, upscale burnout 0.0 °C user trim
4.0 INSTALLATION AND WIRING
4.1 Mechanical
The transmitter has been speci cally designed to t inside a DIN standard probe
head enclosure (such as the Status SCH-4 series), which provides adequate protection from
moisture, dust, corrosive atmosphere etc. All cable entries must be sealed using the correct
size gland. Likewise any probe assembly tted must be sealed.
Care must be taken when locating the transmitter to ensure the working ambient temperature
range of -40 to 85 °C is not exceeded. The 659TC-1 enclosure has a center hole allowing
the sensor wired to enter screw terminals from the transmitter center, this is applicable when
the sensor is mounted directly below the transmitter.
Figure 1
Mounting holes : two holes 5.5mm diameter, 33mm centers
Center Hole sensor wire entry : 4mm
4.2 Electrical
Electrical connections to the transmitter are made to the screw terminal provided on the top
face. The correct type of thermocouple wire must be used to connect sensor, this will normally
be provided as part of the probe assembly. The screw terminals allow for wires to enter either
inner or outer direction. Never attempt to unscrew the spare terminal which secures the factory
tted cold junction sensor. The terminal is tted with a tamperproof screw to avoid accidental
adjustment.
The transmitter is protected against reverse connection and over voltage. If no sensor (input)
connection is made the transmitter will go into either up or down scale output current,
depending on con guration setting.
Figure 2 gives connection details, the output is shown connected to a 24V supply. The load
symbol represent any other device connected in the loop, such as Monitoring equipment ,
panel indicators and loop isolators. The load value can range from 0 ohms to the max loop load
for given supply, refer to section 3 “Max load” for more information.
The transmitter conforms with EC directive BS EN 61326 : 1998 when correctly installed in a
termination head providing at least IP20 protection and with sensor wires less than 3 meters.
Shielded or twisted pair wires are recommended for output wires. Always ensure the 4 to 20
mA loop is grounded at one point, this would normally be at the monitoring equipment or loop
power supply.
In normal operation the range “R” LED acts as over-range LED. The menu LED is always o .
Figure 2 Every e ort has been taken to ensure the accuracy of this speci cation, however we do
not accept responsibility for damage, injury, loss or expense resulting from errors and
omissions, and we reserve the right of amendment without notice
Ø43.0 mm
21.0 mm
33.0 mm
Cent
- +
Load
- +
R
M
-
T/C
- +
+
THERMOCOUPLE
TEMPERATURE
TRANSMITTER
PUSH BUTTON
4 to 20mA TEMPERATURE TRANSMITTER
MODEL 659TC-1
DWYER INSTRUMENTS, INC.
MICHIGAN CITY, IN 46360 USA
The 659TC-1 is an in-head 4 to 20mA transmitter that connects to a standard thermocouple
sensor and converts the sensor’s temperature to a linear temperature 4 to 20mA signal.
The transmitter sensor type and range can be requested at the time of order, but if desired the
659TC-1
24VDC
ers