Page 1
Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com
TT809 TemptranTM
2-wire Temperature Transmitter and Housing
Installation and Operating Instructions
Page 2
Minco Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com 2
Description
Model TT809 is a 2-wire temperature transmitter for RTD (Resistance Temperature Detector) thermometers. The
TemptranTM converts the RTD's signal into a 4 to 20 mA current. The current changes according to the range in
which the Temptran is calibrated: 4 mA at the lowest temperature of the range, rising to 20 mA at the top of the
range. The leads that supply power also carry the current signal. The TT809 is FIELD RANGEABLE; the Zero and
Span are adjustable over -50 to 212°F and 30 to 320°F respectively allowing for re-ranging by means of a simple
calibration process. The gasketed metal housing provides excellent weather resistance and is easily installed using
the attached mounting brackets. Request Minco Application Aid 15 for more general information on transmitters.
Specifications
Sensing Element:
2-wire 1000 ohm @ 0°C platinum RTD, 0.00375 or 0.00385 ohm/ohm/°C TCR.
Output:
4 to 20 mA DC over specified range.
Calibrated Accuracy:
+/- 0.1% of span (0.75% span overall matched to sensor).
Transmitter Linearity:
+/- 0.1% of span.
Rangeability:
-50 to 212 F (-45° to 100°C). Span: 30 to 320 F (17° to 180°C)
Housing:
4.5” L x 2.75” W x 2.25” cast alloy, moisture-resistant housing with three 1/2”
NPT
integral conduit bosses, gasketed cover and adjustable mounting brackets.
Suitable for outdoor use.
Operating Environment:
-40 to 185°F (-40 to 85°C).
Storage Environment:
67 to 212°F (-55 to 100°C).
Ambient Temperature Effects:
+/- 0.01% Span/°F (+/- 0.018% Span/°C).
Warm-up Drift:
+/- 0.1% of span max., assuming Vsupply = 24 VDC and Rloop = 250 ohms.
Stable within 15 minutes.
Supply Voltage:
8.5 to 35 volts DC with no load.
Input Voltage Effect:
+/- 0.001% of span per volt.
Maximum Load Resistance:
The maximum allowable resistance of the signal-carrying loop is given by
this formula: Rloop max = (Vsupply-8.5)/.02 amps
System Integration:
Output “High” (22-25mA) with sensor open. Output “Low” (3.3-3.7mA)
with sensor shorted.
Zero and Span Adjustment:
Non-interacting.
Maximum Output Current:
28 mA.
Power Connections:
Screw terminals, non-polar (connect either way).
Sensor Connections:
Screw terminals, non-polar (connect either way).
Universal Spares:
Temperature ranging via. dip switches. Spare transmitter will cover any range.
Weight:
9.3 oz. (263 grams) Transmitter and housing.
Page 3
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Installation
Installation of the TT809 consists of mounting the transmitter and connecting it to power. The housing is mounted
using two fold-out tabs on the bottom. Power and RTD wires are connected to the transmitter by 4 screw
terminals located near the edge of the circuit board (Figure 1). The transmitter’s power and RTD connections are
designed for non-polar hook-up, so polarity is not important. Locate the Temptran near the RTD in an area where
the ambient temperature stays between -40 and 85 C (-40 and 185 F). If calibration is necessary, set dipswitches before sliding transmitter circuit board into metal housing (See Transmitter Ranging section).
1. Connect a 1000 ohm RTD to the “RTD” terminals as shown below (Figure 1).
2. Connect a DC source, not exceeding 35 VDC, to the “PWR” terminals.
Wiring Diagram
Figure 1
Power Supply
DC power supply requirements are determined by the TT809 minimum voltage requirement and voltage drop
across the load resistor and installation lead wires.
Example: The transmitter requires 8.5 Volts minimum. A typical 250 ohm load resistor drops 5.0 Volts @ 20 mA.
Allowing a margin of 0.5 Volts for the supply permits 25 ohms of lead wire resistance for remote installation.
Totaling these, we get a minimum power supply requirement of 14 VDC.
Using a 24 VDC power supply will take care of nearly all installations, but the TT809 will operate with as much as
35 VDC.
R1
DC
SUPPLY
LINE
POWER
CONTROL ROOM
COPPER LEADS,
TWISTED PAIR,
NON POLARIZED
4-20 mA
LOOP
RTD
ZERO SPAN
SW1
TB1
CONTROLLER
AND/OR
INDICATOR
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Calibration Procedure
1. Connect the equipment as shown below (Figure 2) substituting a resistance decade box, with resolution of at
least 0.01 ohm, in place of the RTD.
24 VDC
POWER SUPPLY
4-20 mA
LOOP
mA
INDICATOR
SPANZERO
TB1
RANGE SWITCHES
DECADE BOX
Figure 2
2. Determine sensor resistance corresponding to the lower and upper temperature range of the transmitter
from Tables 3 and 4 (page 6). Using “RTD Calc” a more complete resistance vs. temperature chart can be
printed; Download it from Minco’s web site, www.minco.com.
3. Set the decade box to the resistance value corresponding to the lower temperature. Adjust the Zero pot until
the milliammeter reads 4.0 mA +/- 0.016 mA.
4. Set the decade box to the resistance value corresponding to the upper temperature. Adjust the Span pot
until the milliammeter reads 20.0 mA +/- 0.016 mA.
5. Set the decade box to the resistance value corresponding to the lower temperature and verify that the
milliammeter still reads 4.0 mA +/- 0.016 mA. Correct if necessary, then repeat steps 4 and 5.
Transmitter Ranging
The transmitter is initially calibrated to a specific temperature range, as shown on the label attached to the
housing. Unless a different range is desired, ranging is not necessary. If the temperature range is changed,
recalibrate the transmitter as described in the section, Calibration Procedure.
When a different temperature range is desired, Tables 1 and 2 (Page 5) provide range switch settings
corresponding to the various temperature ranges. Switches 1 to 4 set the lower temperature limit (Zero) of the
transmitter. Switches 5 to 8 set the upper minus lower temperature (Span) of the transmitter.
For example, a temperature range of 50 to 200°F has a Zero of 50°F and a Span of 150°F (200-50). Table 1
shows the closest Zero range is 58°F with switches 1 through 4, respectively, in the ON, OFF, OFF, and ON
positions. Likewise, Table 2 shows the closest Span range is 155°F with switches 5 through 8, respectively, in the
ON, OFF, ON, and OFF positions. Once the switches are set, the Zero and Span trim pots should provide sufficient
adjustments to calibrate the transmitter.
In the event that the trim pots do not have sufficient adjustments, the switch settings should then be changed. In
the above example, if the Zero trim pot cannot adjust the transmitter current up to 4mA with the 58°F Zero switch
settings, then the Zero switch settings should then be changed to 38°F (ON, OFF, ON and OFF) which is the next
lower range. Likewise if the Span trim pot does not have sufficient adjustment, then the Span switch settings
should be changed.
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Zero Switch Settings
Table 1
Span Switch Settings
(Upper Minus Lower Temperature Limits)
Table 2
* Span = Upper - Lower Temperature. # Zero ranges overlap next adjacent range.
Z E R O S P A N
Switch Settings Center Point Switch Settings
1 2 3 4 °F °C
ON ON ON ON -60 -51
ON ON ON OFF -42 -41
ON ON OFF ON -22 -30
ON ON OFF OFF -2 -19
ON OFF ON ON 18 -8
ON OFF ON OFF 38 3
ON OFF OFF ON 58 14
ON OFF OFF OFF 78 26
OFF ON ON ON 100 38
OFF ON ON OFF 120 49
OFF ON OFF ON 140 60
OFF ON OFF OFF 160 71
OFF OFF ON ON 181 83
OFF OFF ON OFF 202 94
OFF OFF OFF ON 223 106
OFF OFF OFF OFF 244 118
S P A N *
Switch Settings
Center Point
5 6 7
8
°F
°C
ON
ON
ON
ON
34
19
ON
ON
ON
OFF
58
32
ON
ON
OFF
ON
82
46
ON
ON
OFF
OFF
106
59
ON
OFF
ON
ON
131
73
ON
OFF
ON
OFF
155
86
ON
OFF
OFF
ON
178
99
ON
OFF
OFF
OFF
202
112
OFF
ON
ON
ON
224
124
OFF
ON
ON
OFF
247
137
OFF
ON
OFF
ON
270
150
OFF
ON
OFF
OFF
294
163
OFF
OFF
ON
ON
317
176
OFF
OFF
ON
OFF
339
188
OFF
OFF
OFF
ON
362
201
OFF
OFF
OFF
OFF
384
213
Page 6
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Resistance vs. Temperature for 1000 Ohm Platinum Sensors (°F)
PW = 0.00375 ohm/ohm/°C, PF = 0.00385 ohm/ohm/°C
Table 3
Resistance vs. Temperature for 1000 Ohm Platinum Sensors (°C)
PW = 0.00375 ohm/ohm/°C, PF = 0.00385 ohm/ohm/°C
Table 4
Temp. (°F) Sensor
0 -10 -20 -30 -40 -50 -60 -70 -80 -90
0
PW
932.07 910.76 889.41 868.01 846.58 825.09 ------ ------ ------ ------
PF
930.33 908.49 886.60 864.67 842.71 820.70 ------ ------ ------ ------
Temp. (°F)
Sensor 0 10 20 30 40 50 60 70 80 90
0
PW
932.07 953.34 974.57 995.77 1016.92 1038.04 1059.12 1080.17 1101.18 1122.15
PF
930.33 952.15 973.92 995.66 1017.36 1039.03 1060.66 1082.25 1103.81 1125.33
100
PW
1143.08 1163.98 1184.84 1205.66 1226.45 1247.19 1267.90 1288.58 1309.21 1329.81
PF
1146.82 1168.28 1189.69 1211.07 1232.42 1253.73 1275.00 1296.24 1317.44 1338.61
200
PW
1350.38 1370.90 1391.39 1411.84 1432.25 1452.63 1472.97 1493.27 1513.54 1533.76
PF
1359.74 1380.84 1401.90 1422.93 1443.91 1464.87 1485.79 1506.67 1527.51 1548.33
300
PW
1553.95 1574.11 1594.22 1614.30 1634.34 1654.35 1674.32 1694.25 1714.14 1734.00
PF
1569.10 1589.84 1610.54 1631.21 1651.84 1672.44 1693.00 1713.53 1734.02 1754.47
400
PW
1753.82 1773.60 1793.34 1813.05 1832.72 1852.36 1871.95 1891.51 1911.03 1930.52
PF
1774.89 1795.28 1815.62 1835.93 1856.21 1876.45 1896.66 1916.83 1936.96 1957.06
500
PW
1949.96 1969.37 1988.75 2008.08 2027.38 2046.64 ------ ------ ------ ------
PF
1977.12 1997.15 2017.14 2037.09 2057.01 2076.90 ------ ------ ------ ------
Temp. (°C)
Sensor 0 -5 -10 -15 -20 -25 -30 -35 -40 -45
0
PW 1000.00
980.93 961.84 942.71 923.55 904.36 885.13 865.87 846.58 827.24
PF 1000.00
980.44 960.86 941.24 921.60 901.92 882.22 862.48 842.71 822.90
Temp. (°C)
Sensor 0 5 10 15 20 25 30 35 40 45
0
PW 1000.00
1019.04 1038.04 1057.02 1075.96 1094.88 1113.76 1132.62 1151.44 1170.24
PF 1000.00
1019.53 1039.03 1058.49 1077.94 1097.35 1116.73 1136.08 1155.41 1174.70
50
PW
1189.01 1207.74 1226.45 1245.12 1263.76 1282.38 1300.96 1319.52 1338.04 1356.54
PF
1193.97 1213.21 1232.42 1251.60 1270.75 1289.87 1308.97 1328.03 1347.07 1366.08
100
PW
1375.00 1393.44 1411.84 1430.21 1448.56 1466.87 1485.15 1503.41 1521.63 1539.82
PF
1385.05 1404.00 1422.93 1441.82 1460.68 1479.51 1498.32 1517.10 1535.84 1554.56
150
PW
1557.99 1576.12 1594.22 1612.30 1630.34 1648.35 1666.33 1684.29 1702.21 1720.10
PF
1573.25 1591.91 1610.54 1629.15 1647.72 1666.27 1684.78 1703.27 1721.73 1740.16
200
PW
1737.96 1755.80 1773.60 1791.37 1809.11 1826.82 1844.51 1862.16 1879.78 1897.37
PF
1758.56 1776.93 1795.28 1813.59 1831.88 1850.13 1868.36 1886.56 1904.73 1922.87
250
PW
1914.93 1932.46 1949.96 1967.44 1984.88 2002.29 2019.67 ------ ------ ------
PF
1940.98 1959.06 1977.12 1995.14 2013.14 2031.11 2049.05 ------ ------ ------
Page 7
Minco Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com 7
How to Order:
TT809
Model Number: TT809
PW
Resistance thermometer type: RTD Temptran
PF = 1000 Platinum (.00385)
PW = 1000 Platinum (.00375)
080
LLL in .1” increments 040 = 4.0”, 120 = 12.0”, 000 for “W” with out sensor
E
Mount type:
E = Duct mount
V = Duct averaging
O = Outside air
P = Immersion
W = Wall mount
1
4 to 20 mA DC Output
S
Temperature Range (4 mA Temp/20 mA Temp):
EN = -20 to 140°F (-29 to 60°C)
S = 0 to 100°F (-18 to 38°C)
A = 20 to 120°F ( -7 to 49°C)
BI = 30 to 130°F ( -1 to 54°C)
N = 32 to 122°F ( 0 to 50°C)
H = 40 to 90°F ( 4 to 32°C)
C = 32 to 212°F ( 0 to 100°C)
SX = Special range as defined on job order – must fall within adjustment limits of
Transmitter.
Consult factory for current list of available ranges.
1
Calibration:
1 = No calibration data, sensor or transmitter
2 = Sensor/Transmitter matched at 0°C with NIST cert
3 = Sensor/Transmitter matched at 0, 100, & 260°C with NIST cert
TT809PW080E1S1 Sample Part Number
Page 8
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Dimensions: All dimensions are in inches (millimeters)
Figure 3
SPAN
15
RANGING
DIP SWITCHES
ZERO
TRANSMITTER
4.50
(1143,0)
2.75
(69,9)
HOUSING
AND COVER
1/2"
NPT (2)
2.0
(50,8)
Page 9
Minco (Main Office) Customer Service/ Minco S.A.
7300 Commerce Lane Order Desk: Usine et Service
Minneapolis, MN Tel: 1.763.571.3123 Commercial, Z.I.
55432 Fax: 1.763.571.0942 09310 Aston, France
USA custserv@minco.com Tel: (33) 5 61 03 24 01
Tel: 1.763.571.3121 www.minco.com Fax: (33) 5 61 03 24 09 Stock # 360-00080(B) 103395
Fax: 1.763.571.0927
www.minco.com
Warranty
Items returned within one year from the date of sale, transportation prepaid, which Minco Products, Inc. (The
"Seller") reasonably determines to be faulty by reason of defective materials or faulty workmanship will be
replaced or repaired at the Seller's discretion, free of charge. This remedy is to be the sole and exclusive remedy
available to the buyer in the event of a breach by the Seller. Items that show evidence of mishandling or
misapplication, may be returned by the Seller at the customer's expense. Furthermore, the Seller is not to be held
responsible for consequential damages caused by its product except as required under Minnesota Statutes,
Section 336.1-719 (3).This warranty is expressly in lieu of any other expressed warranty or implied warranty of
merchantability or fitness for a particular purpose, and of any other obligations or liability on the part of the Seller
or its employees or agents.
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