Orion System OE217-00 - Manual (Page 29)

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DATE: B. CREWS
DESCRIPTION: PAGE
DRAWN BY:
Water Temperature Sensor Thermowell
1
JOB NAME
07/09/04
G-OE291-T-Well.CDR
OE291
OE291 Thermowell Assembly
Using OE230 Temperature Sensor
Notes:
1.)All Wiring To Be In Accordance With
Local And National Electrical Codes
And Specifications.
Temperature Sensor Resistance/Voltage Chart
Temp Resistance* Voltage
F Ohms @ Input*
-10.............93333 ........4.620
-5...............80531 ........4.550
0 ...............69822 ........4.474
5 ...............60552 ........4.390
10 ..............52500 ........4.297
15 ..............45902 ........4.200
20 ..............40147 ........4.095
25 ..............35165 ........3.982
30 ..............30805 ........3.862
35 ..............27140 ........3.737
40 ..............23874 ........3.605
°
Temp Resistance* Voltage
F Ohms @ Input* °
45 ..............21094 ........3.470
50 ..............18655 ........3.330
52 ..............17799 ........3.275
54 ..............16956 ........3.217
56 ..............16164 ........3.160
58 ..............15385 ........3.100
60 ..............14681 ........3.042
62 ..............14014 ........2.985
64 ..............13382 ........2.927
66 ..............12758 ........2.867
68 ..............12191 ........2.810
Temp Resistance* Voltage
F Ohms @ Input* °
69 ..............11906 ........2.780
70 ..............11652 ........2.752
71 ..............11379 ........2.722
72 ..............11136 ........2.695
73 ..............10878 ........2.665
74 ..............10625 ........2.635
75 ..............10398 ........2.607
76 ..............10158 ........2.570
78 ..............9711 ..........2.520
80 ..............9302 ..........2.465
82 ..............8893 ..........2.407
Temp Resistance* Voltage
F Ohms @ Input*
84 ..............8514 ..........2.352
86 ..............8153 ..........2.297
88 ..............7805 ..........2.242
90 ..............7472 ..........2.187
95 ..............6716 ..........2.055
100 ............6047 ..........1.927
105 ............5453 ..........1.805
110 ............4923 ..........1.687
115 ............4449 ..........1.575
120 ............4030 ..........1.469
°
125 ............3656 ..........1.369
*Chart Notes:
1. Use the resistance column to check the thermistor sensor while disconnected from the controllers (not powered).
2. Use the voltage column to check sensors while connected to powered controllers. Read voltage with meter set on DC volts.
Place the "-"(minus) lead on GND terminal and the "+"(plus) lead on the sensor input terminal being investigated. If the voltage
is above 5.08 VDC, the sensor or wiring is "open." If the voltage is less than 0.05 VDC, the sensor or wiring is shorted.
The Duct Sensor Is Used For Sensing Entering Or
Leaving Water Temperatures. Location Of The
Sensors Is Very Important In Order To Obtain
Accurate Temperature Readings. The Following
Recommendations Should Be Followed:
When Used As A Supply Water Temperature
Sensor The Sensor Should Be Mounted In The
Supply Water Piping As Close To The Water Coil
As Possible For Best Accuracy, Apply Insulation
On The Outside Of The Piping Over The Sensor.
This Will Help Thermal Gradients From Affecting
The Sensor.
Entering Water
Leaving Water
When Used As A Leaving Water Temperature
Sensor The Sensor Should Be Mounted In The
Return Piping As Close To The Water Coil Outlet
As Possible. For Best Accuracy, Apply Insulation
On The Outside Of The Piping Over The Sensor.
This Will Help Thermal Gradients From Affecting
The Sensor.
See The Systems Installation And Operation
Manual For Other Design Considerations And
Recommendations Regarding Water Temperature
Caution!
1/8 -27 NPSM Internal Thread "
1/8 -27 NPT External Thread "
1/2" NPT External Thread
3.25"
0.5"
5.13"
4.94
OE291 Stainless Steel Thermowell
Leads Are Non-polarized.
Butt Splice Leads To 24
Gauge Wire Minimum.
Connect Leads To
"Analog In" And "Ground"
At Controller.
The OE230 Duct Sensor Threads Into
The OE291 Stainless Steel Thermowell.
The OE291 Thermowell Threads Into A
1/2” FPT Elbow or Tee in the Water Piping
of the Water Coil at Which You wish to
Measure the Water Temperature. The
Pipe must be a minimum of 4” Diameter
or an Extended Tee and Bushing
Configuration Must be Used to
Accommodate the Length of the
Thermowell Assembly.
"
OE230 Temperature Sensor
(Ordered Separately)