ATC-125 -90 to 125°C / -130°F to 257°F
ATC-140 -20 to 140°C / -4 to 284°F
ATC-156 -24 to 155°C / -11 to 311°F
ATC-157 -45 to 155°C / -49 to 311°F
ATC-250 28 to 250°C / 82 to 482°F
ATC-320 33 to 320°C / 91 to 608°F
ATC-650 33 to 650°C / 91 to 1202°F
ITC-155 -23 to 155°C / -9 to 311°F
ITC-320 33 to 320°C / 91 to 608°F
ITC-650 33 to 650°C / 91 to 1202°F
CTC-140 -17 to 140°C / -1 to 284°F
CTC-320 33 to 320°C / 91 to 608°F
CTC-650 33 to 650°C / 91 to 1202°F
CTC-1200 300 to 1205°C / 572 to 2200°F
MTC-140 -17 to 140°C / -1 to 284°F
MTC-320 33 to 320°C / 91 to 608°F
MTC-650 33 to 650°C / 91 to 1202°F
Page 1:
Does and don’ts in the use of inserts
Page 2:
Using inserts
Page 3:
Inserts for CTC and MTC series
Page 4-5:
Predrilled inserts for ATC and ITC series
Page 5:
Undrilled inserts for ATC and ITC series
Page 6-7:
Multi-hole inserts for ATC and ITC series
Page 8:
Application kit for calibration of sanitary
sensors
PRODUCT DESCRIPTION
From time to time we get information from end-users of JOFRA dryblock calibrators that something is
wrong with the calibrator, as it is
not able to meet the temperature
specifications.
This is often due to the fact that the
customer is using a wrong insertion
tube, although he is in good faith.
Therefore, you can save a lot of time and irritations by using the right
insertion tube.
Does and dont´s in the use of inserts
Important things to REMEMBER when using inserts:
Remove inserts from the well with the insert removal tool.
•
•
Remove the inserts after calibration, as it might cause problems to
remove them later on if they stay in the well for longer periods.
Take care when removing very hot or cold inserts and use adequate
•
protective equipment if necessary.
•
Make certain that the sensors and inserts are free from any particles
of dirt before inserting them into the well. Inserts are designed to fit
perfectly into the well thus maximizing the thermal conductivity. If not
the insert may be jammed.
•
Remove regularly build-up of dirt and dust from inserts and wells with
a cloth or detergent.
Important things to AVOID when using inserts:
Do not force inserts or sensors into the well.
•
•
Do not drop any foreign materials into the well.
Do not use oil or other liquids to optimise the thermal conductivity
•
due to risk of leakage, which will destroy the other components.
•
Do not use inserts of metals dissimilar to that of the block, unless
specified by the manufacturer as this may cause a different degree of
expansion and contraction.
ISO 9001 Manufacturer
Sensor-under-test
Calibrator
Insertion tube
Well
Sensor-under-test
Calibrator
Insertion tube
Well
Sensor-under-test
Calibrator
Insertion tube
Well
Sensor-under-test
Calibrator
Insertion tube
Well
Sensor-under-test
Insulation plug
Calibrator
Insertion tube
Well
Sensor-under-test
Calibrator
Insertion tube
Well
USING INSERTS
Insertion tubes
for temperature dry-blocks
Using inserts from other JOFRA calibrators
Often customers believe that they can use inserts from other models of JOFRA temperature calibrators. Consequently, we get complaints about errrors in the temperature specifications.
Even if the diameter is right, the length might not be. In this case the insertion tube is
too tall. This gives a heat flow out of the top of the well and the temperature uniformity will change dramatically.
Using inserts that are too small
Using insertion tubes with diameters that are too small creates another problem. The
heat transfer between the well and the insertion tube is insufficient, as the air around
the tube has an insulating effect. This will make the temperature very unstable and
unable to reach the set value.
This problem also applies to the use of 6 mm and 1/4 in (6.35 mm) sensor holes. Even
though this combination may seem to match it gives a very poor heat transfer as the
sensors do not have an even contact with the insertion tube.
Accessory Sheet
AS-CP-2205-US
Using inserts made of the “wrong” material
Home-made inserts can be made in a very professional way with the correct lenght
and size, but the material used for the inserts might cause problems and wrong
results. If the specifications e.g. apply to a brass insert, it is not a good idea to use
inserts made of aluminum or other materials due to the difference in conductivity.
To get the right result and to make the calibrator measure correctly, it is therefore
extremely important to use the right material for the inserts.
Using inserts with too short sensor holes
When drilling your own inserts it is a common mistake to make the sensor holes too
short. Using this kind of insert may influence the temperature gradient, as the calibrator was originally calibrated at the bottom of the well.
Using inserts without using an insulation plug
All JOFRA cooling temperature calibrators are delivered with an insulation plug, to be
placed on top of the well. The design of this type of calibrators require such a device,
and the calibrators have also been calibrated with the insulation plug.
There is a large heat flow out of the well, and if the plug is not used during calibration,
it will cause problems reaching the set temperature of the calibrator.
2 www.jofra.com
Using inserts with the correct size, holes and material
To avoid problems, waste of time and to get the optimum use of your calibrator we
recommend that you use inserts from AMETEK Calibration Instruments as they follow
our specifications.
Insertion tubes
for temperature dry-blocks
PREDRILLED INSERTS FOR CTC AND MTC SERIES
Inserts for CTC-140 A and CTC-320 A/B are made of aluminum. Inserts for CTC-650 A/B are made of
brass. Inserts for CTC-1200 A are made of high-temperature steel alloy.
All specifications on hole sizes are referring to the outer diameter (OD) of the sensor-under-test.
The correct clearance size is applied in all predrilled inserts.
Inserts, undrilled
Instruments
InsertsCTC/MTC-140 A 2CTC/MTC-320 A CTC/MTC-650 ACTC-320 BCTC-650 BCTC-1200 A
5-pack, undrilled
inserts
Undrilled
insulation plug
Spare part no. for predrilled inserts - metric (mm)
Probe diameter
3 mm003
4 mm004
5 mm005
6 mm006
7 mm007
8 mm008
9 mm009
10 mm010
11 mm011
12 mm012
13 mm013
14 mm014
15 mm015
16 mm016
18 mm018
20 mm020
Package of the above inserts
Multi-hole type 1M01
Spare part no. for predrilled inserts - imperial (inch)
Probe diameter
1/8 in125
3/16 in187
1/4 in250
5/16 in312
3/8 in375
7/16 in437
1/2 in500
9/16 in562
5/8 in625
11/16 in688
3/4 in750
13/16 in813
7/8 in875
Package of the above inserts
Multi-hole type 2M02
Note 1: Use the insert code, when ordered as the standard insert together with a new calibrator.
Note 2: CTC-140 A only: Remember to use matching insulation plugs.
Note 3: CTC-140 A only: All multi-hole inserts are delivered with a matching insulation plug.
Note 4: CTC-1200 A only: Remember to order matching insulation plugs.
60F44810017510019460F35660F420124403
123937N/AN/AN/AN/Asee below
Instruments
Insert
code
Insert
code
CTC/MTC-
1
140 A
123428123436123444N/AN/A124503
60F45110017710019660F35960F423124406
123429123437123445123452123460124504
60F45310017910019860F36160F425124407
123430123438122516123453123461124505
105185100182100201105190105195124506
105186100183100202105191105196124507
105187100185105188105192105197124508
123431100188100204105193105198124509
123432100186100206105194105199124510124414
12343360F339105189123454123462N/A
N/A100190100208123455123463N/A
N/A100191100209123456123464N/A
N/A123439123446123457123465N/A
N/A123440122517123458123466N/A
N/A123441122518123459123467N/A
124679124681124685124683124687124689
123479
CTC/MTC-
1
140 A
60F45010017610019560F35860F422124511124415
60F45210017810019760F36060F424124512
60F45410018010019960F36260F426124404
60F45610018110020060F36460F428124513124518
60F45810018410020360F36660F430124514
60F46010018710020560F36860F432124515
60F46210018910020760F37060F434124405124414
60F46460F34460F40860F37260F436N/A
60F46610019210021060F37460F438N/A
N/A60F34860F41260F37660F440N/A
N/A10019310021160F37860F442N/A
N/A60F35260F41610518460F444N/A
N/A60F35460F41860F37760F446N/A
124680124682124686124684124688124690
123480
CTC/MTC-
2
320 A
3
123475123476N/AN/AN/A
CTC/MTC-
2
320 A
3
123477123478N/AN/AN/A
CTC/MTC-
650 A
CTC/MTC-
650 A
CTC-320 B CTC-650 B
Instruments
CTC-320 B CTC-650 B
CTC-1200 A
Inserts
CTC-1200 A
Inserts
4
Insulation
plugs
124415
124416
124518
124519
N/A
4
Insulation
plugs
124416
124519
N/A
Accessory Sheet
AS-CP-2205-US
Undrilled inserts
(CTC/MTC-140 A)
4
4
Undrilled inserts
(CTC/MTC-320 / 650 A/B)
Undrilled inserts
(CTC-1200 A)
3
4
5
Multi-hole type 1
(CTC/MTC-140 A)
9
3
6
Multi-hole type 1
(CTC/MTC-320 A / 650 A)
3/16
1/8
Multi-hole type 2
(CTC/MTC-140 A)
3/8
1/8
1/4
Multi-hole type 2
(CTC/MTC-320 A / 650 A)
www.jofra.com 3
4,5
6
4
5
1/4
3/16
Insertion tubes
for temperature dry-blocks
Accessory Sheet
AS-CP-2205-US
PREDRILLED INSERTS FOR ATC AND ITC SERIES - 4 MM REFERENCE HOLE
JOFRA dry-block insert compatibility and materials:
ATC-320 = ATC-650 = ITC-320 = ITC-650 (made of brass)
ATC-125 = ATC-155 = ATC-156 (made of aluminum)
ATC-157 = ITC-155 (made of aluminum)
All specifications on hole sizes are referring to the outer diameter (OD) of the sensor-under-test.
The correct clearance size is applied in all predrilled inserts.
Spare part no. for predrilled inserts with 4 mm reference hole
Instruments
Probe diameter
3 mm
4 mm
5 mm
6 mm
7 mm
8 mm
9 mm
10 mm
11 mm
12 mm
13 mm
14 mm
15 mm
16 mm
Package of the
above inserts
Set of insulation
plugs for 4 mm
reference hole
Spare part no. for predrilled inserts with 4 mm reference hole
Probe diameter
1/8 in
3/16 in
1/4 in
5/16 in
3/8 in
7/16 in
1/2 in
9/16 in
5/8 in
Package of the
above inserts
Set of insulation
plugs for 4 mm
reference hole
Insert
code
003105623105623123270105622123270
004
005
006
007
008
009
010
011
012
013
014
015
016
Insert
code
125
187
250
312
375
437
500
562
625
ATC-125 A/B
1
105625105625123271105624123271
105627105627123272105626123272
105629105629123273105628123273
105631105631123274105630123274
105633105633123275105632123275
105635105635123276105634123276
105637105637123277105636123277
105639105639123278105638123278
105641105641123299
105643105643123300
105645105645N/A105644N/A
105647105647N/A105646N/A
105649105649N/A105648N/A
-124697124697124699124701124699
-126234105810123374N/AN/A
ATC-125 A/B
1
105677105677123279105676123279
105679105679123280105678123280
105681105681123281105680123281
105683105683123282105682123282
105685105685123283105684123283
105687105687123301
105689105689123302
105691105691N/A105690N/A
105693105693N/A105692N/A
-124698124698124700124702124700
-126234105810123374N/AN/A
ATC-155/156
A/B
ATC-155/156
A/B
ATC-157 A/B
Instruments
ATC-157 A/B
ATC-320/650 A/B
ITC-320/650 A
2
2
ATC-320/650 A/B
ITC-320/650 A
2
2
ITC-155 A
105640123299
105642123300
ITC-155 A
105686123301
105688123302
Note: All inserts (metric and inches) are supplied with a hole for the 4 mm OD reference sensor.
Note 1: Use the insert code, when ordered as the standard insert together with a new calibrator.
Note 2: ATC-157 / ITC-155: 12 mm, 13 mm, 7/16 in and 1/2 in inserts are delivered without the 4 mm
reference hole, but supplied with a matching insulation plug.
4
(ATC-157 A/B and ITC-155 A)
2
2
4
(ATC-125/155/156/320/650 A/B
and ITC-320/650 A)
2
2
ATC-series
4 www.jofra.com
Insertion tubes
for temperature dry-blocks
Accessory Sheet
AS-CP-2205-US
PREDRILLED INSERTS FOR ATC AND ITC SERIES - 1/4 INCH REFERENCE HOLE
Spare part no. for predrilled inserts with 1/4 in (6.35 mm) reference hole
Instruments
Probe diameter
3 mm
4 mm
5 mm
6 mm
7 mm
8 mm
9 mm
10 mm
11 mm
12 mm
13 mm
14 mm
15 mm
Package of the
above inserts
Set of insulation
plugs for 1/4 in.
reference hole
Spare part no. for predrilled inserts with 1/4 in (6.35 mm) reference hole
Probe diameter
1/8 in
3/16 in
1/4 in
5/16 in
3/8 in
7/16 in
1/2 in
9/16 in
Package of the
above inserts
Set of insulation
plugs for 1/4 in.
reference hole
Inser t
code
803125260125260125290125259125290
804125262125262125291125261125291
805125264125264125292125263125292
806125266125266125293125265125293
807125268125268125294125267125294
808125270125270125295125269125295
809125272125272N/A125271N/A
810125274125274N/A125273N/A
811125278125278N/A125277N/A
812125280125280123299
813125282125282123300
814125284125284N/A125283N/A
815125286125286N/A125285N/A
Inser t
code
901125297125297125314125296125314
902125299125299125315125298125315
903125301125301125316125300125316
904125304125304125317125303125317
905125306125306N/A125305N/A
906125308125308123301
907125310125310123302
908125312125312N/A125311N/A
ATC-125 A/B
1
-125389125389125387125388125387
-126240125511125510N/AN/A
ATC-125 A/B
1
-125392125392125390125391125390
-126240125511125510N/AN/A
ATC-155/156
A/B
ATC-155/156
A/B
ATC-157 A/B
2
2
Instruments
ATC-157 A/B
2
2
ATC-320/650 A/B
ITC-320/650 A
125279123299
125281123300
ATC-320/650 A/B
ITC-320/650 A
125307123301
125309123302
ITC-155 A
ITC-155 A
Note: All inserts (metric and inches) are supplied with a hole for the 4 mm OD reference sensor.
Note 1: Use the insert code, when ordered as the standard insert together with a new calibrator.
Note 2: ATC-157 / ITC-155: 12 mm, 13 mm, 7/16 in and 1/2 in inserts are delivered without the 4 mm
reference hole, but supplied with a matching insulation plug.
1/4
(ATC-157 A/B / ITC-155 A)
2
2
1/4
(ATC-125/155/156/320/650 A/B
and ITC-320/650 A)
2
2
ITC-series
UNDRILLED INSERTS FOR ATC AND ITC SERIES
Instruments
InsertsATC-125 A/B
5-pack, undrilled inserts
5-pack, undrilled inserts
with a 4 mm hole for the
reference probe
5-pack, undrilled inserts
with a 1/4 in hole for the
reference probe
One undrilled insert
Undrilled insulation plug
122720122720123286122719N/AN/A
122722122722123285122721N/AN/A
125288125288125313125287N/AN/A
N/AN/AN/AN/A124899124891
126040122781123304N/AN/AN/A
ATC-155/156
A/B
ATC-157 A/B /
ITC-155 A
ATC-320/650
A/B / ITC320/650 A
4
ATC-140 A/BATC-250 A/B
1/4
www.jofra.com 5
Insertion tubes
for temperature dry-blocks
MULTI-HOLE INSERTS FOR ATC AND ITC SERIES - METRIC (MM)
Accessory Sheet
AS-CP-2205-US
12
8
4
1/4
5
6
11
Multi-hole M01
(ATC-140/250 A/B)
4
6
6
6
Multi-hole M01
(ATC-157 A/B / ITC-155 A)
3
3
3
4
3
3
333
3
4
6
9
4
4
3
6
5
Multi-hole M02
(ATC-157 A/B / ITC-155 A)
6
1/4
6
6
4
4
1/4
4
Multi-hole M01
(ATC-125 A/B)
4
6
1/4
6
6
Multi-hole M02
(ATC-125 A/B)
4
3
3
3
3
1/4
6
3
Multi-hole M03
(ATC-125 A/B)
4
4
4
4
4
4
1/4
4
Multi-hole M01
(ATC-156/320/650 A/B /
ITC-320/650 A)
6
6
4
6
6
1/4
6
6
6
Multi-hole M02
(ATC-156/320/650 A/B /
ITC-320/650 A)
4
3
3
3
3
3
3
3
3
1/4
3
3
3
6
Multi-hole M03
(ATC-156/320/650 A/B /
ITC-320/650 A)
Multi-hole M03
(ATC-157 A/B / ITC-155 A)
4
3
1/4
6
5
Multi-hole M07
(ATC-157 A/B / ITC-155 A)
Multi-hole M06
(ATC-157 A/B / ITC-155 A)
3
3
3
1/4
3
3
3
3
3
Multi-hole M08
(ATC-157 A/B / ITC-155 A)
4
6
5
1/4
9
6
4
Multi-hole M04
(ATC-125 A/B)
4
6
3
9
5
4
Multi-hole M04
(ATC-156/320/650 A/B /
ITC-320/650 A)
Spare part no. for multi-hole inserts - metric (mm)
Instruments
Insert code
M01
M02
M03
M04
M06
M07
M08
1
ATC-125 A/BATC-155/156 A/B
ATC-157 A/B /
ITC-155 A
126272122751123294122750124897124889
126273122753123295122752N/AN/A
126274122755123296122754N/AN/A
126275122757N/A122756N/AN/A
N/AN/A125377N/AN/AN/A
N/AN/A125378N/AN/AN/A
N/AN/A125379N/AN/AN/A
ATC-320/650 A/B
ITC-320/650 A
ATC-140 A/BATC-250 A/B
Note: All multi-hole inserts (metric and inches) for ATC-125/140/156/157 and ITC-155 are supplied with a matching insulation plug.
Note: Remember to use matching insulation plugs.
Note 1: Use the insert code, when ordered as the standard insert together with a new calibrator.
6 www.jofra.com
1/4
3
6
Insertion tubes
for temperature dry-blocks
MULTI-HOLE INSERTS FOR ATC AND ITC SERIES - IMPERIAL (INCH)
Accessory Sheet
AS-CP-2205-US
1/2
5/16
3/16
1/4
3/16
1/4
7/16
Multi-hole M02
(ATC-140/250 A/B)
1/8
1/8
4
3/16
Multi-hole M04
(ATC-157 A/B / ITC-155 A)
4
1/4
1/4
1/4
4
1/4
1/4
1/8
4
3/8
1/4
1/4
1/4
1/4
Multi-hole M05
1/4
(ATC-125 A/B)
4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
Multi-hole M05
(ATC-156/320/650 A/B /
ITC-320/650 A)
1/8
1/8
1/4
1/4
3/16
4
1/8
1/4
3/8
1/4
3/16
Multi-hole M06
(ATC-125 A/B)
4
1/8
1/4
3/8
1/4
3/16
Multi-hole M06
(ATC-156/320/650 A/B /
ITC-320/650 A)
Multi-hole M05
(ATC-157 A/B / ITC-155 A)
Spare part no. for multi-hole inserts - imperial (inch)
Insert code
M02
M04
M05
M06
M09
1
ATC-125 A/BATC-155/156 A/B
N/AN/AN/AN/A124898124890
N/AN/A123297N/AN/AN/A
126276122759123298122758N/AN/A
126277122761N/A122760N/AN/A
N/AN/A125380N/AN/AN/A
Multi-hole M09
(ATC-157 A/B / ITC-155 A)
ATC-157 A/B /
ITC-155 A
Instruments
ATC-320/650 A/B
ITC-320/650 A
ATC-140 A/BATC-250 A/B
Note: All multi-hole inserts (metric and inches) for ATC-125/140/156/157 and ITC-155 are supplied with a matching insulation plug.
Note: Remember to use matching insulation plugs.
Note 1: Use the insert code, when ordered as the standard insert together with a new calibrator.
www.jofra.com 7
ORDERING CUSTOM-MADE SPECIAL INSERTS
Schedule for Insert – Order Form
AMETEK D enma rk A/S
• G ydev ang 32- 34 • 34 50 A ller ød • De nmar k • CVR nr .: D K 14 747 079 105171 11
When ordering custom made special inserts a few details have to be
noticed:
• Specify the instrument for which the inserts are ordered
• Specify the sensor size for each hole
Please use our order form for custom-made insert, which are available at
www.jofra.com
APPLICATION KIT FOR CALIBRATION OF
SANITARY SENSORS
At picture 1 you see a custom made insert and our STS-102 A cable
reference sensor placed in a JOFRA ATC-156 B dry-block calibrator. At
picture 2, the sanitary sensor has been fitted into the insert and is ready
for calibration. Note that the design makes room for the reference sensor
cable.
To learn more about calibration of sanitary temperature sensors please
see accessory sheet AS-CP-2201 available at www.jofra.com
is one of the world’s leading manufacturers and
AMETEK Calibration Instruments
developers of calibration instruments for
temperature, pressure and process signals
as well as for temperature sensors both from
a commercial and a technological point of view.
JOFRA Temperature Instruments
Portable precision thermometers. Dry-block and
liquid bath calibrators: 4 series, with more than
25 models and temperature ranges from
-90° to 1205°C / -130° to 2200°F. All featuring speed,
portability, accuracy and advanced documenting
functions with JOFR ACAL calibration software.
JOFRA Pressure Instruments
Convenient electronic systems ranging from
-1 to 1000 bar (25 inHg to 14,500 psi) -
multiple choices of pressure ranges, pumps and
accuracies, fully temperature- compensated
for problem-free and accurate field use.
JOFRA Signal Instruments
Process signal measurement and simulation for
easy control loop calibration and measurement
tasks - from handheld field instruments to
laboratory reference level bench top instruments.
JOFRA / JF Marine Instruments
A complete range of calibration equipment
for temperature, pressure and signal,
approved for marine use.
FP Temperature Sensors
A complete range of temperature sensor s
for industrial and marine use.
M&G Pressure Testers
Pneumatic floating-ball or hydraulic piston dead
weight testers with accuracies to 0.015% of reading.