Temperature Monitoring | Deluxe Wall Mount Temperature Sensors,
Protocol Communication
TW PROTOCOL SERIES
Modbus and BACnet Protocol Communication
TWLP
The TWLP Series features embedded BACnet and Modbus
communication protocols to communicate temperature readings
to a building automation system controller. The setpoint slider and
pushbutton override options offer additional local input.
SPECIFICATIONS
BACnet and
Modbus
Embedded BACnet and Modbus
communication protocols…
provides ease of integration
Network
configuration
Eliminates the costs of home run
wiring and analog inputs required
by traditional sensors
APPLICATIONS
• Temperature control in office
buildings and schools with
systems utilizing BACnet or
Modbus protocol
Multiple baud
rates
Congurable to multiple baud
rates
…ensures network
compatibility
Setpoint and
override options
Setpoint and override activation
represented in protocol…
eliminates costly wiring and inputs
Input Voltage Class 2; 12 to 30 Vdc, 24VAC, 50/60Hz,
Operating Temp 0 to 50 °C (32 to 122 °F)
Housing Material High impact ABS plastic , UL 94 V0
Protocol BACnet or Modbus (selectable)
Connection 2-wire RS-485
Data Rate 9600, 19200, 38400, 57600 (Modbus), bps
Parity None/Odd/Even (selectable-Modbus);
Address Range 1 to 127
Setpoint Slider Resolution
(Optional)
Override Button (Optional) Remotely readable and resettable
Sensor Type Solid-state, integrated circuit
Accuracy ±0.5 °C (±.9 °F) typical
Resolution 0.1 °C (0.2 °F)
Range 10 to 35 °C (50 to 95 °F)
WARRANTY
Limited Warranty 5 years
AGENCY APPROVALS
*
100 mA max.
(selectable); 9600, 19200, 38400, 76800
(BACnet), bps (selectable)
None (BACnet)
1% full scale
EMC Conformance: Low voltage directive 2006/95/EC and EMC directive 200 4/108/EC.
EMC Special Note: Connect this product to a DC distribution network or an AC/DC power
adaptor with proper surge protection (EN 61000-6-1:2007 specication requirements).
*The CE mark indicates RoHS2 compliance. Please refer to the CE Declaration of Conformit y
for additional details.
TM
HQ0001722.E 0117
Temperature Monitoring | TW Protocol Series
WIRING DIAGRAM DIMENSIONAL DRAWING
+
POWER SUPPLY
12-30VDC, 24VAC
-
PWR
GND
RS-485+
RS-485-
SHIELD
ORDERING INFORMATION
Local Display
TW
Protocol
P
X X
-
Temp. Cal. Cer t.
CONTROL SYSTEM
COMMON
RS-485+
RS-485 -
SHIELD
Controller
Option
Housing
3.5"
(89 mm)
4.8"
(122 mm)
1.2"
(31 mm)
L = LCD
X = No display
Example:
TW L P X X 1 3
= Protocol
X = No
1 = 1 pt. cal. ce rt.
2 = 2 pt. cal. ce rt.
Blank = Non e
1 = Pushbut ton override
2 = Set point s lider
3 = Pushbut ton override
+ set point s lider
Blank = Clo ud white
B = Black
HQ0001722.E 0117
TM
Temperature Monitoring | Thermistor Table
THERMISTOR TABLE
Class Pt RTD Balco RTD THERMISTOR
Type 100 Ohm 1000 Ohm 1000 Ohm 10k Type 2 10k Type 3 10k Dale 10k “G” US 20k
Accuracy ±0.3°C ±0.3°C ±1% @70°C ±1.0°C ±0.2°C ±0.2°C ±0.2°C Consult
0.00385
curve
Temp.
Response*
PTC PTC PTC NTC NTC NTC NTC NTC
°C °F 100 Ohm 1000 Ohm 1000 Ohm 10k Type 2 10k Type 3 10k Dale 10 k “G” US 20k NTC
-50 -58 80.306 803.06 740.46 692,70 0 454,910 672,300 441,200 1,267,600
-40 -40 84.271 842.71 773.99 344,70 0 245,089 337,200 2 39,700 643,800
-30 -22 88.222 882.22 806.02 180,100 137,307 177,200 135,300 342,00 0
-20 -4 92.160 921.60 841.00 98,320 79,729 97,130 78,910 189,080
-10 14 96.08 6 96 0.86 877.46 55,790 47,843 55,340 47,540 108,380
0 32 100.000 1,000.00 913.66 32,770 29,588 32,66 0 29,4
10 50 103.903 1,039.03 952.25 19,930 18,813 19,900 18,78 0 39,440
20 68 107.794 1,077.94 991.82 12,500 12,272 12,490 12,260 24,920
25 77 109.735 1,097.35 1,013.50 10,000 10,000 10,000 10,000 20,000
30 86 111.673 1,116.73 1,035.18 8,055 8,195 8,056 8,194 16,144
40 104 115.541 1,155.41 1,077.68 5,323 5,593 5,326 5,592 10,696
50 122 119.397 1,193.97 1,120.52 3,59 9 3,89 4 3,602 3,893 7,234
60 140 123.242 1,232.42 1,166.13 2,486 2,763 2,489 2,760 4,992
70 158 127.075 1,270.75 1,21
80 176 130.897 1,308.97 1,254.55 1,258 1,462 1,258 1,458 2,516
90 194 134.707 1,347.07 1,301.17 919 1,088 917 1,084 1,833
100 212 138.506 1,385.06 1,348.38 682 821 679 816.8 1,356
110 230 142.293 1,422.93 1,397.13 513 628 511 623.6 1,016
120 248 146.068 1,460.68 1,4 47.44 392 486 389 481.8 770
130 266 149.832 1,498.32 1,496.28 303 380 301 376.4 591
Sensor
Codes
0.00385
curve
-50/150°C 0/70°C -20/70°C 0/70°C Factory
STANDARD RTD AND THERMISTOR VALUES (Ohms Ω)
90 64,160
0.75 1,753 1,994 1,753 1,990 3,512
B C I D H J R M
Accessories | C Series
To compute Linitemp Temperature
mV read in g/10 - 273.15 = Temperature in °C
HQ0001722.E 0117
HQ0001874.H 0117
TM
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