Kobold TNS-0I, TNS-1D, TNS-1E, TNS-1F, TNS-1G Operating Instructions Manual

Series TNS/TNF Thermometers

Installation/Operation

KOBOLD Instruments Inc. 1801 Parkway View Drive Pittsburgh, PA 15205
Phone [phone] • Fax [phone]

Precautions

• Please read the entire manual prior installing this
product. These instructions include information on

the TNS/TNF series capillary and rigid stem ther­mometers. Refer to the part number label on the
instrument housing to verify the exact model number.

• User’s responsibility: The TNS/TNF series ther­mometer are designed for use in a wide variety of
applications. It is however, the user’s responsibility to
ensure the suitability of the device with respect to a
specific application. Additionally, it is the user’s
responsibility to ensure the unit is properly installed
and tested prior to operation.

• Proper Installation and Sealing: Always use a
proper thread sealant with all installations. Be sure
not to overtighten fittings. Test for leaks prior to oper­ating the instrument.

Instructions

• Wiring and Electrical: For units with switches,
check the current and voltage requirements for
the load to be controlled. Ensure that they do not
exceed the maximum specified switch ratings.

• Temperature and Pressure: Under no circum-
stances should the maximum ratings of operating
temperature and pressure be exceeded. Doing so
can result in equipment damage and personnel
injury.

• Material Compatibility: Ensure that the media
contacted parts are made of a material which is
chemically compatible with the process media.
Ensure that the housing material is compatible
with the ambient environment. Failure to do so
can result in equipment damage caused by chem­ical attack.

Electrical Connections:

For units with optional adjustable switches, all electrical connec­tions are made via a weather proof 90° angle connector plug on
the side of the indicator housing. Connections are made via num­bered screw terminals inside the connector. It is recommended
that a multi-conductor jacketed cable be used. The outside diam­eter of the jacket should be large enough to ensure that the
weather-tight cable gland on the plug can be tightened down
snugly.

Table 1 (back of page) lists all of the switch type codes and the
functional descriptions for each switch type. The switch type
code is stamped on the dial of the thermometer and is on the wir­ing diagram which appears on the thermometer housing. Consult
the wiring diagram on the thermometer housing for pin assign­ments for each switch.

5

6

4

3

1

2

TNS/TNF Terminal Housing

Setpoint Adjusting Tool

Switch Adjustment:

For units which have optional switches, adjust the switch setpoint as follows:

• Remove the switch adjusting tool by pulling it from the center of the 90° angle electrical connector.

• Insert the tool into the adjusting stub at the center of the dial crystal. The setpoint indicators are the ones with the red tips.
Push the adjusting tool in against spring tension and rotate until the adjusting lever contacts the setpoint indicator at its
base.

• Use the tool to rotate the setpoint indicator to the desired setpoint.

• Re-install the adjusting tool into the rear of the electrical connector.

FM Rev 02/27/04

Manual-TNS/TNF

Table 1: Switching Options and Wring Terminal Numbers

Contact Type Code Functional Description

Sliding & Magnetic

Contacts

Single Contact

S10 M10 Single contact closes when temperature is above setpoint Sliding Contact Ratings

S20 M20 Single contact opens when temperature is above setpoint

S30 M30 Changeover (SPDT) contact switches over when temperature is

above setpoint

Max. Voltage: 250 VAC/VDC
Max. Power: 10 Watts
Max. Current: 0.6 Amps
Elec. Protection: NEMA 4X/ IP65

Two Contacts

S11 M11 Both contacts closed when temperature is above setpoint

S12 M12 First contact closed when temperature is above setpoint

Second contact open when temperature is above setpoint

S21 M21 First contact open when temperature is above setpoint

Second contact closed when temperature is above setpoint

S22 M22 First contact open when temperature is above setpoint

Second contact open when temperature is above setpoint

Inductive Contacts

Single Contacts

I10 Single switch activated when temperature is above setpoint Inductive Switch Rating

I20 Single switch de-activated when temperature is above setpoint

Two Contacts

I11 Both contacts activated when temperature is above setpoint

I12 First contact activated when temperature is above setpoint

Second contact de-activated when temperature is above setpoint

I21 First contact de-activated when temperature is above setpoint

Second contact activated when temperature is above setpoint

Magnetic Contact Ratings

Max. Voltage: 250 VAC/VDC
Max. Power: 30 Watts
Max. Current: 0.6 Amps
Elec. Protection: NEMA 4X/ IP65

Output: NAMUR Per DIN 19234
Elec. Protection: NEMA 4X/ IP65

I22 Both contacts de-activated when temperature is above setpoint

Mechanical Specifications

Materials of construction:
Measuring probe

2.5”, 3” and 10” dials: 304 stainless steel
4” and 6” dials: 316 stainless steel

Housing

3” and 10” dials: Painted steel or stainless

steel

4” and 6” dials: Aluminum or stainless steel

Capillary (TNF series only): 316 stainless steel
Capillary armor (option): 304 stainless steel

FM Rev 02/27/04

Maximum Pressure: 350 PSIG
Maximum Temperature: 1.3X measuring range

Operating Instructions

for

Nitrogen Filled Thermometers

Model: TNS/ TNF

TNS/TNF

page 2 TNS/TNF K01/0707

1. Contents

1. Contents ........................................................................................................ 2

2. Note .............................................................................................................. 3

3. Instrument Inspection .................................................................................... 3

4. Regulation Use .............................................................................................. 3

5. Operating Principle ........................................................................................ 4

6. Electrical Connection (Option)....................................................................... 4

6.1. Contacts ............................................................................................... 5

6.2. Switching Function Contacts ................................................................ 7

7. Installation ..................................................................................................... 8

8. Maintenance and Storage ............................................................................. 8

9. Technical Information .................................................................................... 9

10. Order Codes ............................................................................................... 10

Manufactured and sold by:

Kobold Messring GmbH

Nordring 22-24

D-65719 Hofheim

Tel.: [phone]

Fax: [phone]

E-Mail: [e-mail]

Internet: www.kobold.com

TNS/TNF

TNS/TNF K01/0707 page 3

2. Note

Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.

When used in machines, the measuring unit should be used only when the
machines fulfil the EWG-machine guidelines.

3. Instrument Inspection

Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.

Scope of delivery:

The standard delivery includes:

• Nitrogen Filled Thermometer, model: TNS/TNF

• Operating Instructions

4. Regulation Use

Any use of the Nitrogen Filled Thermometer, model: TNS/TNF, which exceeds
the manufacturer’s specifications, may invalidate its warranty. Therefore any
resulting damage is not the responsibility of the manufacturer. The user assumes
all risk for such usage.

TNS/TNF

page 4 TNS/TNF K01/0707

5. Operating Principle

The measuring system of the gas pressure thermometer comprises probe,
capillary tube and Bourdon tube in a casing. These parts form a unit. The
complete measuring system is filled with pressurised nitrogen. A change in
temperature causes a change in inner pressure in the immersion shaft. The
resulting deflection of the Bourdon tube is transferred to the pointer through a
pointer element.
For the model TNF, the display and probe are connected by a capillary tube
separated by a distance up to 100 m.
A version filled with glycerine is available as an option for service at measuring
points exposed to strong vibrations. The fill dampens the measuring system when
exposed to mechanical vibrations and thus enables steady indication; it also
provides good lubrication for moving parts.
We recommend our robust aluminium casing for rough field service conditions.
These thermometers can also be used with aggressive measuring substances
when fitted with a suitable thermowell.

6. Electrical Connection (optional)

The electrical wiring diagram for the incorporated 2-wire transmitter with

4...20 mA output is given below. For all electrical parameters please see section

9. Technical Information: Transmitter.

4

5

3

2

6

1

24 VDC

R

+

-

GND

Screened twisted pair

Pin 1 = Power Supply
Pin 2 = GND (4... 20 mA)
Pin 3 = cable screen

4...20 mA