Multi-Point Temperature Scanners Tempscan 15100/1
The Series TempScan 15100/1 Scanners are panel mounted instruments suitable for monitoring temperature of RTD or T/C Sensors with 2 Alarms. The alarm functions can be common to all channels or can be assigned to 2 groups of channels with one alarm relay individually assigned to each Group. In either case the Set Points are common to all Channels. Channel assignment for group alarms is to be specified with order.
The instruments are designed with CMOS ICs and incorporate a relay based multiplexer to select a sensor. A signal-conditioner with open-sensor detection and necessary linearisation processes the output of the scanned sensor. A Channel No display, a Temperature Indicator along with Push-buttons and LEDs provide the channel information to the operator. Open-sensor indication is provided by flashing the decimal points of the temperature indicator. Analog comparators activate the relay associated with the alarm group to provide SPDT contact output for annunciation etc. The alarm relays remain activated till the abnormal condition is cleared on all the channels within the group during one complete Scan Cycle.
The Scanners have two modes of operation. In the Auto Mode scanning continues at the scan rate selected by the operator, while in Manual Mode the channels can be advanced by a push-button.
INPUT SPECIFICATIONS
SENSOR OPTIONS RTDs & T/Cs as per the Sensor Table given below. The Instrument Range Limits must be within the Minimum and Maximum Span Limits given in the Table.
| Opt. Code |
Sensor Type |
Inst Range Limits °C |
Opt. Code |
Sensor Type |
Inst Range Limits °C |
Min Span |
Max Span |
| P |
Pt 100 |
-200 to 800 |
J |
Fe/Const |
-50 to 700 |
200 |
500 |
| |
|
|
K |
Cr/Al |
-50 to 1200 |
200 |
800 |
| |
|
|
T |
Cu/Const |
-100 to 400 |
200 |
300 |
| |
|
|
E |
Cr/Const |
-100 to 800 |
200 |
400 |
Sensor Standard
Selectable. Set to DIN 43760 for RTDs or ISA/ANSI MC 96.1 for T/Cs
Signal Conditioning
| RTDs |
: |
Bridge Current 0.5 to 1.5 mA |
| T/Cs |
: |
Input Impedance of > 1 Megohm |
Specifications
Automatic CJ Compensation of 1 °C accuracy
Accuracy
| RTDs |
: |
±0.5% of f.s. ± 1 dgt |
| T/Cs |
: |
±0.5% of f.s. ± 1 dgt ± 1 °C(CJ Error) |
Over Range/ Open Sensor
Indicated by flashing Decimal Points of the Indicator
Effect of Leadwire
| RTDs |
: |
1°C for 10% of nominal resistance per lead for 3-wire RTDs |
| T/Cs |
: |
1°C for T/C lead-wire resistance of 100 ohms |
No of Channels
| Model No |
15100 (Encl Opt: D, E) |
15101 (Encl Opt: H & L) |
| Option Codes |
A |
B |
C |
D |
E |
F |
| No of Channels |
6 |
8 |
10 |
12 |
16 |
20 |
OPERATOR INTERFACE
The front panel incorporates Switches and LED indicators for monitoring individual channels.
| Channel Number |
: |
One digit 8 mm LED for 15100 , Two digit 12mm for 15101 |
| Sensor Temp |
: |
3 ½ digit 12 mm LED display with a resolution of 1°C |
| Relay Status |
: |
Two LED indicators for displaying Relay Status |
| Push Buttons |
: |
| A/M |
When pressed, the scanner is in Manual mode |
| Advance |
A push increments channel number in Manual mode |
|
OUTPUT SPECIFICATIONS
Output Options
The following options are available
| Option I |
: |
Indicator only. No Alarms |
| Option A |
: |
Two Alarms common to all Channels and setpoints common to all Channels |
| Option B |
: |
One Alarms Each assigned to 2 I/P Groups with setpoint common to a Group The Input Groups are to be specified along with the order. |
Alarm Type
Can be set to HI/LO
Alarm Settings
Settable throughout the Input Range for each alarm
Acc of Setting
±0.5% of f.s.
Hysteresis
0.5% of f.s.
Relay Operation
User selectable fail-safe or non-fail-safe through pluggable links.
Relay Status
Indicated by the Relay Status LED on front panel
Contact Output
One SPDT contact with rating of 230VAC, 1A 50 VA maximum
POWER SUPPLY SPECIFICATIONS
Power Supply Options
| Option A |
: |
230V AC ± 10%, 45 to 55 Hz |
| Option B |
: |
110V AC ± 10%, 45 to 55 Hz |
ENVIRONMENTAL SPECIFICATIONS
| Rated Temp |
: |
5 to 55 °C |
| Humidity |
: |
90% RH ( Non-Condensing ) |
| Zero Drift |
: |
< 1°C for every 10°C outside the specified ambient temperature of 22-32°C |
| Span Drift |
: |
Less than 0.005% of rdg / °C |
| Storage Temp |
: |
0 to 70 °C |
MECHANICAL SPECIFICATIONS
Enclosure
Welded construction with pullout chassis
Painting
Powder Coated
Enclosure Options
| Option |
Enclosure Type |
Bezel Size |
Cutout Size |
| E |
Vertical |
72(W) x 144(H) |
68(W) x 138(H) |
| H |
Vertical |
96(W) x 192(H) |
92(W) x 186(H) |
| L |
Horizontal |
192(W) x 96(H) |
186(W) x 92(H) |
| G |
Custom |
|
User Specified |
I/O Terminals
Suitable for 1.5 Sq mm wires
ACCESSORIES
Standard
Mounting Clamps, Screws, Fuse, Instruction Manual, Warranty Certificate
1.2 ORDERING INFORMATION
Ordering Code
To Order an instrument of your choice, select a specific Model on the basis of your channel requirement and specify your choice of Power, Encl, etc. in the following format
| Model No. |
Input Code |
Channel Code |
Output Code |
Power Code |
Enclosure Code |
Channel Groups |
Range Value |
| 15100/1 |
X |
X |
X |
X |
X |
(K-L) |
NNN-MMMM |
| ( Note: The letters ‘K’, ‘L’ represent numbers specifying channels in each Group) |
Example
Specify 15101PACAH(6-2)/0-200 to order TempScan 15101 for 8 PT-100 RTD sensors with two groups of 6 and 2 channels with one alarm per group, a range of 0-200 °C operating on 230V AC, 50Hz and housed in a 96(W) x 192(H) x 200(D) mm Enclosure. |
