Minco TI350 User manual

MODELTI350
Temperature Indicator
Installation andOperatingInstructions

Minco Tel: [phone] uFax: [phone] uwww.minco.com 2
Description
Minco’s TI350 digital temperature indicator provides high accuracy and reliability in a compact
2.5” x 4.5” NEMA 4X Polycarbonate case. The TI350 loop powered indicator, accepts a 4 to 20
milliamp DC signal displaying the corresponding temperature in °C or °F.
If separate 4-20 mA transmitter is needed to drive the TI350, order a TT321 and RTD for a
single source assembly. For convenience, the TT321 transmitter can mount inside the meter’s
housing.
Wiring
Use this meter to monitor temperature anywhere from the control room to the sensing location.
Wire it into the current loop anywhere observing the +/-polarity of the loop. Remove screws,
which hold the transparent front cover in place as well as the two thumbscrews securing the
front plate to the housing. Pull power supply terminal block plug from PC board. Using a small
screwdriver, secure the appropriate wires onto block then re-plug block onto board. Follow
Figure 1 for proper wire connections.
Figure 1

Minco Tel: [phone] uFax: [phone] uwww.minco.com 3
Ranging the Display
1. Range switches 5 and 6 (Figure 2) are for coarse adjustment of the zero (4 mA). Set
switches 5 and 6 for where your low-end reading falls according toTable 1. Tenth-degree
resolution can only display temperatures from -50.0 to 199.9. For tenth-degree resolution
set switch 4 to the ON position(this simply turns on the decimal point), then multiply your
desired zero and span temperatures by 10 and choose switch values from both Tables 1
and 2using these multiplied counts.
Table 1 Zero Reading (Counts)
Switch -500 to 0 0 to 500 500 to 1000
40.1 degree = ON, 1 degree = OFF
5ON OFF OFF
6OFF OFF ON
2. Switches 1 and 2 are for coarse adjustment of the span (20 mA). To determine the correct
switch settings, subtract the span temperature (the 20 mA temperature marked on the side
of the transmitter) from the zero temperature (the 4 mA temperature marked on the side of
the transmitter). Example: If your span(20mA) temperature is 200°F and your zero
temperature (4mA) is –100°F, then the Span Reading value is (200°F) –(-100°F) = 300°F.
Per Table 2 below, the appropriate switch settings are then 1=ON, 2=ON.
Special Notes:
If these switch settings do not allowcalibration, use the settings in the neighboring
column. Switch 3 is not used.
Table 2 Span Reading (Counts)
Switch 0 to 500 500 to 1000 1000 to 1500 1500 to 1999
1ON OFF ON OFF
2ON ON OFF OFF
3. Set the unit’s designator using Table 3. For example, if °C is chosen as the temperature
units, then set switches 7=ON and 8=OFF.
NOTE: Indicator requires calibration anytime temperature units are changed using dip
switches.
Table3
Temperature Units
Switch °F °C
7OFF ON
8ON OFF
Figure 2

Minco Tel: [phone] uFax: [phone] uwww.minco.com 4
Calibration Procedure
1. Hook-up the equipment as shown in theFigure 3. Pull terminal block from PC board,
connect wires to block, then re-plug block into board.
2. Set the calibrator to output 4.000 mA.
3. Adjust the meter adjustment “Zero” potentiometer until theTI350 displayreads the
temperature corresponding to 4 mA printed on the label.
4. Set the calibrator to output 20.000 mA.
5. Adjust the meter adjustment “Zero” potentiometer until theTI350 displayreads the
temperature correspondingto 20 mA printed on the label.
6. Repeat steps 2–5 until no further adjustment is necessary.
Current Calibrator
Figure 3

Minco Tel: [phone] uFax: [phone] uwww.minco.com 5
Troubleshooting
Symptom Possible cause Check Action Required
No display on
the meter Improper connection to power supply or power
supply not turned on
Check wiring and power supply. Correct wiring according to
diagram or Repair wires
Temperaturesensor
does not match the
type which the
transmitter requires
Check for the correct temperature sensor type Replace with correct
temperaturesensor
Temperature of the
temperaturesensor
may be higher or lower
than the TemptranTM
transmitter's
temperature range
Verify the sensor’s operating temperature and that
this temperature is withinthe range of the
transmitter
Replace transmitter with a
range suitable for the
temperatures; recalibrate
meter to match new range
Improper wiring to the
metersupplyterminals Check wires supplying power to meter. Repair wires
Improper wiring to the
temperaturesensor Check wires between sensor and transmitter Repair wires
Meterdisplay
is higher or
lower than
expected and
the reading is
steady
Temperaturesensor
may be burned out Examine the temperature sensor and wires for damage.
Disconnect sensor from transmitter and ohm the
RTD; 100 ohm Platinum RTD’s are about 110 ohms
at room temperature and 1000 ohm Platinum RTD’s
are about 1100 ohms at room temperature.
Replace bad sensor
“1 ”
displayed Valid or invalid loop current signal causing
meter reading to
exceed maximum of
+1999
Check for open or shorted temperaturesensor.
An open temperature sensor will not necessarily
cause an overrange display of “1 ”; for example,
when you have set the meter for a 0 to 500 °F
display, but a wiring problem causes the transmitter
to put out its overrange signal of 25 mA, the meter
will display about "656."
If transmitter is sending
proper 4-20mA signal, adjust
meter range.
If meter range is correct, fix
problem initiated by
temperature transmitter.
“-1 “
displayed Valid or invalid loop current signal causing
meter reading to be
below minimum of
-1999
Figure out what should be displayed based on meter
setup.
When wiring to an RTD temperature sensor is
accidentally shorted it causes the transmitter to
produce a current between 3 and 4 mA. For
example, when you have set the meter for a 0 to
500 °F display, it may give a reading like "-25" for a
3 mA current, not a “-1 .”
If transmitter is sending
proper 4-20mA signal, adjust
meter range.
If meter range is correct, fix
problem initiated by
temperature transmitter.
Note: For further information on Minco temperature transmitters go to the following web link
http://www.minco.com/site/transmitter.php

Minco Tel: [phone] uFax: [phone] uwww.minco.com 6
How to Order
TI350 Model Number: TI350 Polycarbonate NEMA 4X case
(-25/200) Temperature Range: Specify temperature range in either °C or °F.
For example, -25° to +200°C = 4 to 20 mA.
CDisplay Mode: C = Celsius
F = Fahrenheit
TI350(-25/200)C … Sample part number
Specifications Display Specifications
Input: 4–20mA DC series connection to current loop
Range: Zero : -500 to 1000 counts
Span: 10 to 1999 counts
Accuracy: ± (0.1% reading + 1 count)
Temperature Coefficient:
Zero : ± 0.075 counts/°C typ.
Span: ±0.005% of span/°C typ.
Linearity: ± (0.1% of span + 1 count)
Forward Voltage Drop: 2.8 volts DC maximum
Display: 0.59” high, 3½ digit LCD (Liquid Crystal Display)
Display Mode: Celsius or Fahrenheit
Display Update: 3 times per second
Underrange Indication: -1 in MSD (Most Significant Digit)
Overrange Indication: 1 in MSD
Decimal: User programmable to 1 position or absent
(i.e. 1XX.X or 1XXX)
Ambient Temperature Range:
Operating: 0 to 50 °C (32 to 122°F)
Storage: -20 to 65 °C (-4 to 149°F)
Weight: 7 oz. (200g)
Enclosure: Polycarbonate, NEMA 4X

Minco Tel: [phone] uFax: [phone] uwww.minco.com 7
Dimensions
Warranty
Items returned within one year from the date of sale, transportation prepaid, which MincoProducts, 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 this product except as
required under Minnesota Statutes, Section 336.1-719 (3).
This warranty is 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 of the seller or its employees or agent.
Minco (Main Office) Customer Service/ Minco S.A. Minco EC
7300 Commerce Lane Order Desk: Usine et Service Hirzenstrasse 2
Minneapolis, MN Tel: [phone] Commercial, Z.I. CH-9244 Niederuzwil
55432-3177 Fax: [phone] 09310 Aston, FranceSwitzerland
USA [email protected] Tel: [phone] Tel: [phone] I SO 9001:2000
Tel: [phone] www.minco.com 050307-1 © Minco 3-2005
Fax: [phone] Stock Number 360-00101
TI350 dimensions