Fluke 2190A Instruction Manual

P/N 489229
June 1978
Rev. 1 6/79

2190A

Therm

Instruction Manual

The Fluke Corporation is pleased to hereby grant GIDEP
(Government-Industry Data Exchange Program) permission to reproduce the
manuals listed in the attachment. Permission is granted on the condition
that you legibly reproduce on the copies the legend "Reproduced With
Permission".

It is our understanding from your request dated January 23, 2001,
that the purpose for copying these manuals is to include them in the GIDEP
database, and that the material won't be copied for any other purpose.

Thank you for your cooperation, and for your interest in Fluke.

Sincerely,
Beverly A. Summers

Paralegal
Fluke Corporation
Intellectual Property Law Dept.
Direct: [phone] [voice]
[phone] [fax]
[e-mail] [e-mail]

WARRANTY

Notwithstanding any provision of any agreement the following warranty is exclusive:

The JOHN FLUKE MFG. CO., INC., warrants each instrument it manufactures to be free from defects in material and
workmanship under normal use and service for the period of 1-year from date of purchase. Thiswarranty extends only
to the original purchaser. This warranty shall not apply to fuses, disposable batteries (rechargeable type batteriesare
warranted for go-days). or any product or parts which have been subject to misuse, neglect, accident, or abnormal
conditions of operations.

In the event of failure of a product covered by this warranty, John Fluke Mfg. Co., Inc., will repair and calibrate an

instrument returned to an authorized Service Facility within 1 year of the original purchase; provided the warrantor’s
examination discloses to its satisfaction that the product was defective. The warrantor may, at its option, replace the
product in lieu of repair. With regard to any instrument returned within 1 year of the original purchase, said repairs or
replacement will be made without charge. If the failure has been caused by misuse, neglect, accident, or abnormal
conditions of operations, repairs will be billed at a nominal cost. In such case, an estimate will be submitted before
work is started, if requested.

THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,

INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS,
OR ADEQUACY FOR ANY PARTICULAR PURPOSE OR USE. JOHN FLUKE MFG. CO., INC., SHALL

NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN

CONTRACT, TORT, OR OTHERWISE.

II any failure occurs, the following steps should be taken:

1. Notify the JOHN FLUKE MFG. CO., INC., or nearest Service facility, giving full details of the difficulty, and
include the model number, type number, and serial number. On receipt of this information, service data, or
shipping instructions will be forwarded to you.

2. On receipt of the shipping instructions, forward the instrument, transportation prepaid. Repairs will be
made at the Service Facility and the instrument returned, transportation prepaid.

SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT

All shipments of JOHN FLUKE MFG. CO., INC.. instruments should be madevia United Parcel Serviceor”BestWay”’

prepaid. The instrument should be shipped in the original packing carton; or if it IS not available, use any suitable

container that is rigid and of adequate size. If a substitute container is used, the instrument should bewrapped in paper

and surrounded with at least four inches of excelsior or similar shock-absorbing material.

CLAIM FOR DAMAGE IN SHIPMENT TO ORIGINAL PURCHASER

The instrument should be thoroughly inspected immediately upon original delivery to purchaser. All material in the

container should bechecked againsttheenclosed packing list. The manufacturerwill not be responsible for shortages
against the packing sheet unless notified immediately. If the instrument is damaged in anyway, aclaim should be filed
with the carrier immediately. (To obtain a quotation to reparr shipment damage, contact the nearest Fluke Technical

Center.) Final claim and negotiations with the carrier must be completed by the customer.

The JOHN FLUKE MFG. CO., INC, will be happy to answer all applications or use questions, which will enhance your
use of this instrument. Please address your requests or correspondence to: JOHN FLUKE MFG. CO., INC., P.O. BOX

C9090, EVERETT, WASHINGTON 98206, ATTN: Sales Dept. For European Customers: Fluke (Holland) B.V.. P.O. Box

5053, 5004 EB, Tilburg, The Netherlands.

*For European customers, Air Freight prepard.

John Fluke Mfg. Co., Inc., P.O. Box C9090, Everett, Washington 98206

Rev. 6181

Change/Errata Informal

Issue No:

This change/errata contains information necessary to ensure the accuracy of the following manual.

Enter the corrections in the manual if either one of the following conditions exist:

1. The instrument’s PCB revision letter is lower than that which is indicated at the beginnir
of the change/errata.

2. No revision letter is indicated at the beginning of the change/errata.

4

2J79

MANUAL

Title:
Print Date:
Rev and Date:

MODEL 2190A DIGITAL THERMOMETER

JUNE 1978

---

C/E PAGE EFFECTIVITY
Page No. Prlnt Date

1

2 1 O/78
3 10178
4 2179
5 2179
6 2179

1 O/78

.E RRATA #l

2190A

On page 4-2, replace Figure 4-l

CHANGE #l-l 1690

and

Table 4-1 with the following:

Line Voltage Switch Settings

120

220 right
240 right

left

left

right
left

Rev.-C, Main PCB Assembly

On page 5-10, make the following changes:

DELETE: S2-i/Switch/473454/89536/473454/ 1

CHANGE: Sl-l/Switch 473355 89536 473355

CHANGE #L-l 1732

/483891/ /48389’i

I

Rev. -C, Main PCB Assembly, make the following changes:

On page 5-7:

ADD: Cl/Cap,mica,47 pF+5%, 500V/148536/71236/DM15E470J/1

On page 8-3, Figure 8-1, Al Main PCB Assembly make the indicated changes:

1 O/78

CHANGE #3-l 1789

On page 8-5, Figure 8-1, Al Main PCB Assembly, make the following changes:

TO: pf----3

’ bxq

2190A

ERRATA#2

On page

On page 2-2, Figure 2-1, (Controls and Indicators) make the following changes:

On page 3-1, paragraph 3-S, line 9, change “microcomputed” to “microcomputer”.

IO/78

l-2,

Table l-3 ( Specifications) make the following changes:

FROM: Common Mode Rejection Z 160 dB at .50,60 and 400 Hz +O.l% with 1OOR unbalance at input.

TO:

FROM: Normal Mode Rejection > 90 dB at 50,60 and 400 Hz *0.10/o
TO:
FROM: Power: 12V dc or 100, 200 or 240V ac *IO’% selectable, 50 to 400
TO:

Common Mode Rejection Z 160 dB at dc, 50,60 and 400 Hz +O.l% with 1 OOs2 unbalance at input.

Normal Mode Rejection > 90 dB at dc, 50,60 and 400 Hz +0.1%x

HZ;

8W typical.

Power: 12V dc or 100, 120,200 or 240V ac *lo%, selectable, 50 to 400 Hz; 8W typical.

ADD an arrow from 4 to scale switch:

0

2

.

On page 3-3, paragraph 3-22, change line 4 to read:

“These voltages appear at FET switches Q12 and Q13 respectively.”

On page 3-3, Figure 3-2, change as shown below:

2190A

AUTO ZERO COMMAND (Q5, QlO, 012, a161

INTEGRATE COMMAND (Q15)

READ COMMAND, DE+ Qll)

SETTLING TIME COMMAND n2 (Q8)

COMPARE OUTPUT, CM

INTEGRATOR OUTPUT U8-7)

BUFFER OUTPUT

TPl 01

(TP7l

MEASUREMENT CYCLE = 300 ms

A

/ AUTO

-, ZERO f

’ lmt0 ’ ,,,,TE- ’
i

200

OV i

-15v :

ov

-15v I

ov 1

-15v :

ms 1 GRATE !

I
,

I
I

,

I

I

I

-1101 .O msl I
I I

I I

-hII+ ,
i i 1 .O

u
I

I

I
I
‘+

ms

u

I
I I

READ

\

I

i

I

I

I

I

I

I

I

r I

I

u IJ

DE+ is generated for positive input voltages. Negative Input voltages enable the DE- mode which, in turn, operates FET

switch, Q13.
Waveform is shown for positive input voltage. It is inverted for negative inputs. Shown for full-scale in.

3 The Q numbers in parenthesis represent FET switches operated by the commands. See Figure 3-3.

D

Figure 3-2. Measurement Cycle Waveforms

On page 3-4, Figure 3-3, Simplified Schematic Analog Section, make the following changes:

ADD: Arrow to emitter; defines NPN.

1 O/78

3

2190A

On page 4-2, paragraph 4-19, line 6, change to read as follows:

“

. . . ambient temperature of 25 +2”C (77.0 ?3.6”F).”

On page 4-3, Table 4-2, change minimum use specifications for Mercury Thermometer as follows:

FROM: “0.05”C resolution.”

TO: “0.05”F resolution.”

On page 4-3, paragraph 4-20, step 8, change to read as follows:

“Select that portion of Table 4-3, , . .”

On page 4-4, paragraph 4-24, step 4, change to read as follows:

“4. Select a switch setting of 9 (Cal), see Table 2-2.”
On page 600-2, paragraph 600-12, delete the last sentence.
On page 602-3, paragraph 602-24, line 4, change “PRI” to “PTI”.
On page 606-3, Table 606-2, step 3, change “+4V” to “+.5V”.
On page 7A-1/7A-2, make the following changes:

Change line 7, of Introduction to read as follows:

“

. . .

this manual with an X.”

Table on 7A-1/7A-2, is missing title, at top of table, place the following title there:

“Table 7A-1. Manual

Status

and Backdating Information”
On Table 7A-1, change assembly name of the A3 Assembly to: “Thermocouple Input PCB Assembly”.
On page 3-4, Figure 3-3, change integrator capacitor:

FROM: Cl3
TO: C2.

ERRATA #3

On page 5-9, Table 5-2, Al Main PCB Assembly (cant), make the following changes:

FROM: R14/Res, var, lOOI,+-lo%, ~W/369520/89536/369520/1/1

TO: R14, Res, var 500k &lo%, ‘/W/474387/1 1236/360T503A/l

FROM: U3/1C, CMOS, Hex open drain buffers/473389/12040/MM74C906N/l/l

TO: U3/ See Final Assembly.
ADD:

XU3/Socket, IC, 14 pins/387138/71785/133-59-02-059/l

On page 5-3, Table 5-1, Final Assembly, make the following changes:

ADD: U3/IC, CMOS, Hex open drain buffers/473389/i 2040/MM74C906N/l /l

ERRATA +l

On page 602-3, Figure 602-l make the following changes:

ADD to the end of Step 5: the degree symbol (

“““) is transmitted to the printer as a (“d”),

ERRATA #5

On Page 600-2 replace paragraph 600-12 with the following:

2190A

600-I 2 The device is a preset 100 to I divider to provide the precision millivolt outputs

from a DC Calibrator required for calibration.
couple input PCB in place of the thermocouple probe during calibration.
to the Y2022 instruction manual for schematic and additional informalion.

On Page 4-3, Paragraph 4-20 make the following changes:

Place the following note between steps 3 and 4:

On Page 4-6, paragraph 4-26, Step 6 make the following changes:

From: Adjust RI4 for a thermometer display of 10.0,. .
To : Adjust RI4 for a thermometer display of I .O,.

CHANGE #+l, 12061

Rev. E, A3 Thermocouple Input PCB Assembly.

On Page 5-13/5-14, Table 5-4 make the following changes:

Add: C3, C4/Cap. Ta. 1 .O fiF +-20%,

Add: UljlC, Linear/473819/04713/MC79LI2ACP/I
From: R2/Res, mtl film. 187K ?I%, 1/8W/291641/91637/CMF551873F/1

TO:

RZ/Res, mtl film, 150K +I%‘, 1/8W/241083/91637/CMF551503F/l

7KV DC/t6lY 19/56289/196DlO5XOO35JAL/2

The device wires into the thermo-

Refer

CHANGE #?I, 12148

On Page 5-3, Table 5-l make the following changes:

From: F 1 -I 20/Fuse, Fast acting/ 196790/7 1400/AGC I -S/l /5/ 1

To: Fl-I?O/Fuse, Slo-blo. 1/8A/Ih648ti/7I400JMDL1-8/1/5/1
From: Fl-240/Fuse, Fast acting/109348/71400/AGCl-16!1/5/1

To: Fl-240/Fuse, Slo-blo, l/16A/l63030/7I400/MDLI -16/1/S/l

ERRATA #6

On Page 4-3 make the indicated changes to the steps of Paragraph 4-20 as shown below:

I. No change

2. No change

3. No change

4. No change

5. No change

6. No change

7. Select the temperature scale (C” or F”) on the 2190A to agree with the temperature
scale of the mercury thermometer in the lag bath.

2179

2190A

ERRATA #I%

8. Read the temperature of the mercury thermometer and find the corresponding mV reading
to this temperature (refer to either the NBS Monograph 125 or the DIN 43710 thermocouple
standard). Interpolation may be used as necessary.

9. Algebraically subtract the mV reading found in Step 8 from the first value found under the
“Divider Output MV”

10. Obtain a divider output equal to the result found in Step 9 by adjusting the calibrator and or
the Divider.

11. Verify that the 2190A reads the value listed in Table 4-3 within the limits specified.

12. Repeat steps 8. 9. 10 and I I for the remaining voltages in the “Divider Output mV” column
Table 4-3.

13. No change

14. No change

15. No change

16. No change

17. No change

(CONT)

column of Table 4-3 for the thermocouple type in use.

6

2179

CEAIYGWEERATA

ISSOB 110: 6 5/84

IlWOMATIO!J

This change/errata contains information necessary to ensure the accuracy of

the following manual. Enter the corrections in the manual if either one of

the following conditions exist:

1.

The revision letter stamped on the indicated PCS is equal to or
higher than that given with each change.

2.

No revision letter is indicated at the beginning of the change/errata.

Title:

2190A

Print Date: June
Rev.- Date:

l-6/79

1978

C/E PAGE EFFECTIVITY
Page No. Print Date

1

:

4

:
7

8

9
10
11

12

9179
5180
5/80
5180
5180
5180
6/81
6/81

3182

3182

5/84

5/84

b

21901

CHANGE

tl - 12307

Rev.-E, A4 Output Option PCB Assembly (2180A-4020T)

On page 602-8:

FROM: R19;RES,VAR,lOO ~10%,1/2W1275735l11236136OTlOlA~l

TO: R191RES,VAR,CERMET,lOO ~10%,1/2W12851301895361285130~1

On page

602-10

and

8-10:

Rotate R19 90 degrees to face the outer edge of the PCB.

CHANGE f2

Rev.-

F,

- 12414

A3

Thermocouple Input PCB Assy (21gOA-4003T)

On page 5-14:

FROM: C21CAP,MICA,lOO PF ~5$,500V11484941721361DM15FlOlJ~l
TO: C21CAP,MICA,150 PF ~5~,500V1148478172136~DM15F151J~1

On page 8-9:

Change value of C2, FROM: lOOpF, TO: 150pF

CHANGE t3 - 12526

On page

5-3:

In the Use Code Column place a

"1"

after the following

Reference Designators; H2, MPl, MP29 MP3, MP4, AND MP5.

Add the following note to the bottom of page 5-4.

1. If the handle on your case is secured by a rivet then these
components are included in one assembly (C-size Cover Assy).

CHANGE #4 -

Order John Fluke p/n:

12580

516703.

Rev.- G, A3 Thermocouple Input PCB Assembly (2190A-4003T)
Rev.- E, Al Thermometer PCB Assembly

(21

gOA-4001T)

On page 5-10:

FROM: R33lRES,COMP,22M
TO: R33jRES,COMP,lOM

~5~,1/4W1221986101121lCB226511
~5%,1/4W1194944101121

!CB1065/1

On page 8-3:

ERRATA

Change the value of R33, FROM: 22 M, TO:

#l

10 M.

On page 1-2, Table l-3:

ADD: PROTECTION CLASS 1 (Relates solely to insulation or grounding

properties further defined in IEC

348.)

ERRATA 12

On page 4-2, Table 4-1:

Change the position of S5 for the 240 volt selection,
FROM: Right, TO: Left.

2190A

CHANGE 55 -

Rev.- 3,

12919

A3

Thermocouple Input PCB Assy. (2190A-4003T)

Documentation Change, does not affect manual.

ERRATA t3 - 13515

On page

ADD: IC, UC,

5-3,

under U4:

programmed for; J, K, T, C, & R152440518953615244051

Thermocouples.

(9004.1)

IAN UPDATED VERSION ON YOUR MICROCOMPUTER MAY BE
IPRESENT IN YOUR INSTRUMENT. IF SO, YOUR INSTRUMENT :
!AT TURN ON WILL DISPLAY

I "2190.1, 9005.1, 2, 3".

"9004.1"

INSTEAD OF

THE INFORMATION GIVEN IN:

iYOUR MANUAL IS CORRECT FOR BOTH, UNLESS YOU WISH TOI

lUSE THE -002 OPTION,

IN WHICH CASE YOU MUST MAKE

lTHE CHANGES AS 'DESCRIBED UNDER CHANGE f6 - 12964. :
i

CHANGE C6 -

12964

Rev.- F, Output Option -002 PCB Assembly (2180A-4020T)

On page 602-7:

FROM: 00210utput Option -002 PCB Assemblyi-0021895361219OA-0021REF

Figure 602-2 (2180A-4020T)

I
I

I
I

TO: A4lOutput Option

-002 PCB Assembly!-0021895361219OA-002iREF

Figure 602-2 (2180A-4020T)

A4Ali0.U.

Add Table 602-6 and Figure

I

I 1 Ql

I

I 43

I
I TRANSISTOR,SI,NPN I 218396

I TRANSISTOR,SI,NPN I 218396 I
ORES DEP CARJOK

j j !: (IC,:-MO;,DUAL,"D;-TYPE

1 U2 :IC,C-MOS,HEX,INVERTER

I

Adapter Assembly 1539288189536!539288!1

602-3

I

+5$,1/4wI 348839 I

I 340117 I
I 404681

to the end of page 602-10:

I I-I I I

04713

04713
80031

02735

I

02735

2N3904
2N3904

CR251-l-5-lOKT!

CD4012AE
CD4069BE I

I I
I

2 I

I REF I

1

I

1
1

I

1
I

I

I-

L

2190A

nnnnnnn

114

Figure 602-i. I A4Al O.U. Adapter Assy.

On page 8-l:

ADD: 8-4.1 A4Al O.U. Adapter PCB Assy, 2180A-1021

ADD THE FOLLOWING FIGURE BETWEEN FIGURES 8-4 AND 8-5:

81

2180A

I
I
I
I
I
I
I
I
I
I

i
I
I
I

- 1621 I

602-11

8-13.1

i
I
I
I
I

i
I
I
I
I

i
I

I

RI j

21808-1621, Rev. ---

nnnnnnn

114

8

Q3

Q

2180A-1021, Rev. ---

Figure 8-4.1 A4Al O.U. Adapter Assy.

5/80

3

2190A

CHANGE

17

- 12993

lTHE INFORMATION CONTAINED WITHIN THIS CHANGE SHOULD BE I
ICOMPLETED ONLY, IF AT TURN ON,
1n9004.1w

or w9005.1n or "9005.2"

YOUR INSTRUMENT DISPLAYS;:

or "9005.3".

I

On page 2-4, para. 2-25, line

FROM: . . .

will display its model number, a decimal point, and the

6:

type of microcomputer in use. Example: "2190.1" indicates type
1 microcomputer in use.

TO: . . . will display the microcomputer version, a decimal point,

and the type of microcomputer in use. Example: a display
reading of

H9004.1m

at turn on indicates that a type

9004 version microcomputer is installed.

Replace the portion of Table 2-2 shown in the following Table 2-2:

Table 2-2 Thermocouple Input Module Switch Settings

I I

DISPLAY AT TURN ON I UC

I

I

I

I
I

9004.1,

or

9005.1

or 9005.2
or 9005.3

I I

iTYPE
I I 0 lll?jq14[5

1

I

2

I
I

3

i

I J I K I T I I c I ; R I
I J I K I I E I

IJ**I K IT**1
f -I- I -I- I -i- I -I- I I -I--I

TYPE SELECT SWITCH SETTING (Sl)

6

1 S I R I lCALl CAL I

i B f I R I

I
I

1

of the

' 7 I

8*1

:CAL( CAL I
iCAL; CAL ;

I

-1

90~1

On page

5-3:

FROM: IC, UC, PROGRAMMED FOR; J, K, T, C, & R ; 473264!8953614732641

THERMOCOUPLES. (TYPE

TO: IC, UC, PROGRAMMED FOR; J,

THERMOCOUPLES. (TYPE

FROM: IC, UC, PROGRAMMED FOR; J,

-1)
tl)

K,

T, C, i R 1 53499018953615349901

K,

E, S, h R 1

47337118953614733711

THERMOCOUPLES. (TYPE -2)

TO: IC, UC, PROGRAMMED FOR; J, K, E, S, dr R :

52563418953615256341

THERMOCOUPLES. (TYPE P2)

On page 5-4:

FROM: IC, UC, PROGRAMMED FOR; J DIN, T DIN,

K, R,

h B THERMOCOUPLES. (TYPE

-3)

TO: IC, UC, PROGRAMMED FOR; J DIN, T DIN,

K, R,

& B THERMOCOUPLES. (TYPE t3)

I 504530189536~5045301
I 525642 189536 1525642 I

ERRATA t4

On page 602-4, step

FROM:
TO:

10.

10.

Adjust

Adjust R15 for an output of 0

10:

~26 for an output of 0

20.1 mV dc.
~0.1 mV dc.

5/80

4

219OA

CHANGE

Rev.-

18

-

13287,

13409

F, Al Main PCB Assembly (2190A-4001T)

On page

5-11:

ADD: VR4IDiode, Zener~18107310471311N969B11

On page 5-12 and 8-2:

Add VR4 and its symbol directly beneath and parallel to R49.

On page 8-3:

Add VR4 and its symbol between U14-10 and +15V (anode to Ul4-10).

On page 8-4:

Delete the connection between 55-16 (ANALOG COM) and 55-17 (RJ COM).

IALL 2190A MAIN PCBS WITH REV. LETTERS E AND LOWER 1
IARE m COMPATIBLE WITH THE FLUKE 2300A SCANNER OR (
/THE Y2001 THERMOCOUPLE MULTIPOINT SELECTOR. IF YOU ;
IHAVE SUCH AN INSTRUMENT AND YOU WISH TO INTERFACE !
IWITH THE

2300A

OR THE Y2001 You MUST CONTACT YOUR f
INEAREST FLUKE SERVICE CENTER FOR MODIFICATION.
iHOWEVER IF YOUR 2190A MAIN PCB HAS A REV. LETTER OFI
I F

IWITH THE 2300A OR THE

OR HIGHER THEN YOUR INSTRUMENT IS COMPATIBLE

Y2001

AND NO MOD IS REQUIRED.;

I :

I

1

CHANGE #9 -

Rev.- G,

13540

002 output option

On page 602-g:

FROM: U210PTO-ISOLATOR

TO: U210PTO-ISOLATOR

FROM: U310PTO-ISOLATOR
TO: U310PTO-ISOLATOR

FROM: U410PTO-ISOLATOR

TO:

~41

0PT0-ISOLATOR

ERRATA 15

On page

8-13,

change the

FROM: GND, TO: GND ISOLATED .
On page 8-5, change S2 to
On page 4-5:

The celicius equivalent for 400 OF should be 204.4 'C,

M 240.0

On page l-2, Table l-2:

FROM:

Y2026,

TO: Y2026B

PCB Assy. (2180A-4020T)

3800141012951T1L1161311
536O45lO12951TIL1161311

380014101295~T1L116131REF
5360451012951TIL116131REF

380014lO1295~TlL116~31REF
5360451O12951TIL11613lREF

IC PWR/GND chart for U22-4,

S3.

'C, please change wherever applicable.

On

page 2-l

2190A

add the following paragraph/procedure:

2-11

When interfacing

a

necessary to readjust the zero calibration of the

following procedure

Turn the 21gOA and 23OOA power off.

1.

Remove the Thermocouple Input Assembly from the rear of the

2.

your

2190A with a Fluke 23OOA Scanner, it

to accomplish this task.

2190A.

2190A and ensure that the input terminals are open.

3.

Place the

the Thermocouple Input Assembly into the

8

position (labled on the PCB) of Sl on and replace

2190A.

4. Remove a Thermocouple Scanner Card (Option -002) from the

23001b

Scanner,

short the input terminals for one of the channels

and replace the Thermocouple Scanner Card into the 23OOA.

Plug the 23OOA interface option cable into the 2190A

5.
Accessory Connector on the rear

6.

Turn the 2190A
Set the 23OOA to the channel which was shorted in step 4

7.

and

23OOA

of

the 2190A.

power on.

above.

8.

Set the 23OOA channel delay to 0.0.

is

Use the

9. Adjust the 21908
front panel, behind the screw-locked cover) to obtain a 2190A
display of 0.0.

10.

Input

Turn

the 21908

Assembly from

replace the Thermocouple Input Assembly into the 2190A.

The 21908 zero will need to be readjusted if not
being used with the 23OOA.
zero,

turn the 2190A power

Thermocouple Input Assembly, short the input

terminals, repeat step

and repeat step 9 above.

on,

On page 602-3, para.,

FROM:

TO:

The message formats
The message formats
diagram is

zero

and 23OOA power

potentiometer (located on the 2190A

the 2190A,

NOTE

To readjust the 2190A

off,

3

above,

602-25, last sentence:

are

shown In Figure 602-l.

are shown

given in

Figre 602-la.

off,

place all switches of

remove

remove the Thermocouple

Sl

off

the

turn the 2190A power

in Figure 602-l and a timing

and

5/80

6

219OA

On page 602-4,

Am?

(USER SUPPLIED)

t1

t2

t3

t4
t5

1 US max.

20

0 US min.
20 US min.

20 US typical

add figure 602.la as follows:

2190A DOU ASSEMBLY

TIMING DIAGRAM

US tp 300 mS,

depending upon reading cycle.

I

I
I

I
I

I
I

I
I

I
I
I
I
I

I

Figure 602-l a Timing Diagram

CHANGE 510 - 14187

Rev.- G, Al Main PCB Assembly (21908-4001)

On

page

CHANGE:

TO:

On page 8-3,

Change the value of R33, FROM:

5-10:

R33!RES, COMP,

22M &5%,

R331RES, COMP. 5.1M &5%,

in lower left quadrant:

1/4WZ?219861011211CB226511

lw12g6467joll211CB515511

22M,

ERRATA 16

On page 4-8,

paragraph 4-41, line 6:
CHANGE: "be connected to the instrument."
TO: "or a 23OOA Scanner may be connected to the instrument."

Paragraph 4-41, step 1:

CHANGE:

"Connect a Y2001 Multipoint Selector to the instrument."

TO: "Connect a Y2001 Multipoint Selector or a 23OOA Scanner to the

instrument.

TO: 5.1M.

6/81

-"l_-.---l-__

7

_.. "

2190A

Paragraph 4-41, step 2:

CHANGE: Short the input to one channel on the Y2001 and select that

channel on the front panel.

TO: Short the input to one channel on the Y2001 or the 2300A Scanner

and select that channel on the front panel, If the 23OOA Scanner
is used, select a delay of 0.0.

Paragraph

4-41,

step 4:

CHANGE: Apply the output of the dc calibrator to TPl (LO) and TP18 (HI).
TO:

CHANGE

Rev.-

ill -

H, Al Main PCB Assembly (2190A-4001)

Apply the output of the dc calibrator to TPl (HI) and TP18 (LO).

14299

On page 5-11:

DELETE: XU31SOCKET, IC, 14.PIN1370304191506 1314.AG39D

ERRATA

t7

I1

On page 602-g:

CHANGE:
TO:

ERRATA

On page

18

UlOlIC, C-MOS,
UlOIIC, C-MOS,

1-3,

Table l-3. Specifications (cant):

HEX 1NVERTERS~404681104713~MC1406BCP~1~1

HEX INVERTER1404681102735~CD4068BEf111

CHANGE: "2190A Total Instrument Accuracy Specifications"
TO: "2190A Instrument Accuracy Specificationsn

ERRATA 19

On page

4-3,

Table 4-2.

Under minimum use specifications column change, FROM:

TO: Resolution:

100

Also under Resolution add the following: Accuracy:

Test Equipment Requirements:

uV.

100 uV

.008%

resolution,

In Figure 4-2,

6/81

Equipment Connections add a voltmeter as showm below:

VOLTMETER

8

ERRATA #lO

2190A

On

page

602-4,

replace Figure 602-l with the following:

Measurement Data Output Format for

R&232-C and Current Loop Ports

I

I 11 21

31 41 51 61 71 81

9; 10: 11112i13 114 I 15~16~17118~1g120121~

lNORHAL TEMPERATURE MEASUREMENT DATA

;cIilcRlsP(sPI* ISPlD

ID ID ID/.ID/.ID IsP ISP IF/C~SP~SP;SP:SP~CRILF:

lOPEN THERMOCOUPLE OUTPUT (2190A only)

jCHICHjSPjSPI& ISPjD ID ID ;D/.ID/.ID 1SP ISP IF/CISP(SPIO IC lCRlLF\

IOVERRANGE OUTPUT
(CHICHISP!SPI& ISPlD ID

ID ID/.ID/.lD ISP ISP IF/CISPISPIO IL 1CRILFI
I
!
I

NOTE: If the limits option in the thermometer is I

installed (option 27XOA-006) and is indicating I

an out of limit condition, character slot 17

i

I

will be an exclamation point (I) for any of the!

three above modes.

i SYXBOL DESCRIPTION

i CH

Channel indent numbers (00 thru 99)

I SP Space I

Thermometer limits Option Setpoint exceeded symbol I

i:

I
I D

I .

Plus or minus symbol
Temperature data

values

(0 thru 9)

Floating decimal point, will be in character slots

11

or I

12 or slot 12 when used with 2180A or 2190A Thermometer (

I

IF/C

I CR
I LF
I ?
I OT Open Thermocouple (Character slots 16 and

I OR

-----------------------------------------~-------------------------

I

resp. I
Fahrenheit or Celsius

Carriage Return
Line Feed
Question mark

17) I'

Over Range (Character slots 16 and

17)

I

I

I
I

I

I

I

I

I

I
I
I

I

I

On page 602-2, para. 602-8 step 6 add the following:

When using the R&232-C interface, set the address switch

S3 to addres

1,

6, 7, 8 or 9.

When using with the 2XXXA-522
Personality Card and the 1120A IEEE-488 Translator, set the
baud rate to 2400 and follow all discussions regarding the

R&232-C interface.

CHANGE 512 - 15481

Rev.- J,

A3 Thermocouple Input PCB Assembly

(2190-4003)

On page 5-14:

CHANGE: H21SCREW, SEMS, 4-40 X 3/81281196189536128119614

TO: H21SCREW,

BRASS, 4-40 X

3/8I615716189536161571612

2190A

DELETE: H61WASHER, SPLIT,

On page 8-9,

replace Figure

t4111039518953611103g5i2

8-3

with Figure

1

as shown below:

Figure 1.

CHANGE

Rev.- K,
Rev.- L,

f13 - 15521, 15745

Al Main PCB Assembly (Thermometer PCB Assy.) (2190A-40011

Al

Main PCB Assembly (Thermometer PCB Assy.) (2190A-4001)

On page

5-8:

CHANGE: C21iCAP, ELECT, 4000 UF -lO/+lOO%, 2581370734~80031~

3044TS043U0251111

TO: C211CAP, ELECT, 4700 UF -10/+30%, 25V16141151895361614115~1

On page

Change the value

8-5:

of

C21, FROM: 4000, TO: 4700 UF.

CHANGE /14 - 15934

Rev.-

M, Al Main PCB Assembly (Thermometer PCB Assy.) (2190A-4001)

On page 5-9:

CHANGE: MPlIBUTTON, GREEN (TO

TO: MP~IBuTTON,

CHANGE: MP21BUTTON, LT.

TO: MP21BUTTON, LT.

GREEN (TO S1)1644435i895361644435ll

PUTTY GREY (TO S2)l425900189536142590011
PUTTY GREY (TO S2)1540724l89536154072411

s1)1445197189536144519711

3182

‘10

ERRATA 111

On page 4-5, Table 4-3, make the following Changes:

Change the entire line for THERMCICOUPLE TYPE S, under MICROCOMPUTER
TYPE 52,

2190A

FROM: 17~gg313moo +/-

0.8:3100

+/- 0.911704.4 +I-

TO: 17.76213064 +/- 0.813064 +/- 0.911684.4 +/- 0.511684.4 +/- 0.5

Change the DIVIDER CUTPUT

mV

for THERMOCOUPLE TYPE B, under

MICROCOMPUTER TYPE t3,

FROM:
TO:

6.780

6.783

and

13.690

and 13.699

Change the entire line for THERMOCWPLE TYPE R, under MICROCOMPUTER

TYPE f3,

FROM:

TO:

ERRATA

112

On page 602-2, in the NOTE following paragraph 602-10,

CHANGE: Y2026
TO: Y2026B

Add the following paragraphs between

0 For RS232C or 20 mA current loop operation the -002 address

2o.2~~~~1oo.o+/-o.g(~~oo.o+/-o.911704.4+/~0~6l1704.4+/~0.6

2o.21~~~og2.o+/-o.gl~og~.o+/-o.911700.0+/~0.6l1700~0+/~0~6

pSP8graphS

switches may be ignored.

O-5)1704.4

602-11 and 602-12.

+I-

0.5

0

The Data set ready (DSR, pin

32) must be at +3V to +15V in order to output data on the
RS232 Bus. These lines can be tied to Request to send (RTS) ,
pin

ERRATA

#13

On

page 5-9, Table 5-2:
CHANGE:
TO:

H51WASHER, FLATf14772817373411402 12
HSIWASHER, FLAT~1107751895361110775~2

ERRATA #I4

On page 5-3, Table 5-l :

CHANGE: MP16 lFRONT PANEL I472282 I89536 1472282 11
TO: MP161FRONT PANEL16555221895361655522il

5/84

31)

which will provide the

-1 l-

33)

or Clear to send (CTS, pin

+15V

necessary.

ERRATA t15

On page 602-4, Figure 602-1, change the OPEN TifERHDCUlPLE UITPUT,

FROM:

CHlCHiSPlSPI+ !SPlD ID ID ID/.ID/.iD !SPiSPiF/CiSPISPIO IC !CRlLF

TO:

CHics1SPISP1 + ~sPlsPlsPlsPl0 ID/.10 iSPISPIF/CISPISPiO (C ICRlLF

2190A

5/84

-12-

2190A

Table of Contents

SECTION

1

2

3

TITLE

INTRODUCTION AND SPECIFICATIONS ...............................

1-l.

I-IO. SPECIFICATIONS .............................................

OPERATING INSTRUCTIONS ............ ..............................

2-1. INTRODUCTlON ..............................................

2-3. SHIPPING INFORMATION

2-6. INPUT POWER ...............................................

2-9. INSTALLATION

2-12. OPERATING FEATURES ......................................

2-14. OPERATING NOTES ..........................................

2-16. Option Information ...........................................

2-18. Fuse Replacement ............................................

2-20.
2-22. Open Thermocouple Indication
2-24.

2-26. OPERATION ..................................................

2-27. Thermocouple Installation .....................................

2-29. Thermocouple Operation
2-3 I. Voltage Measurements

THEORY OF OPERATION ..............................................

3-1. INTRODUCTION ..............................................

3-3.

3-10. CIRCUIT ANALYSIS ..........................................

3-12.

3-17. Analog Section ...............................................

INTRODUCTION ..............................................

....................................

........................

Overload Thermocouple Indication
Microcomputer Identification

......................................

........................................

OVERALL FUNCTIONAL DESCRIPTION

Digital Section

...............................................

.............................

.................................

..................................

......................

......................

PAGE

l-l

I-I
l-2

2-1

2-l
2-1
2-l
2-I

2-l
2-3
2-3
2-3
2-3
2-3
2-4
2-4
2-4
2-5
2-5

3-l

3-1
3-1
3-2
3-2
3-2

4

MAINTENANCE ........................................................

4-l. INTRODUCTION ..............................................

4-3. SERVICE INFORMATION
4-6. GENERAL MAINTENANCE
4-7.

4-9.
4-I 1. Cleaning
4-13.

4-15. ServiceTools ................................................

4-17.

Instrument Disassembly
Input Line Power Selection

Fuse Replacement

PERFORMANCE TEST

.....................................................

............................................

.....................................

...................................

.......................................

....................................

........................................

4-1

4-1
4-l
4-l
4-l
4-2
4-2
4-2
4-2
4-2

2190A

TABLE OF CONTENTS,

SECTION

5

6

continued

TITLE PAGE

4-20. Ambient Temperature Test
4-22.

4-24. Ice BathTest .................................................. 4-6

4-26.
4-28. Equipment Preparation

4-30. Zero Adjustment .............................................. 4-6

4-32.
4-34.
4-36.
4-38.
4-40.

4-42. TROUBLESHOOTING .......................................... 4-8

LIST OF REPLACEABLE PARTS

5-l.
5-4.

OPTION AND ACCESSORY INFORMATION

Ice Bath Construction

CALIBRATION ADJUSTMENT PROCEDURE

Reference Adjustment
Reference-Junction Adjustment

Thermocouple Input Calibration .................................

SELECTED COMPONENT REPLACEMENT OR ADJUSTMENT . .

Multipoint Potentiometer Adjustment ............................

TABLE OFCONTENTS .........................................

INTRODUCTION ...............................................

HOW TO OBTAIN PARTS

TABLE OF CONTENTS ......................................... 6-1

........................................

..........................................

...................

.........................................

..........................................

..................................

........................................

......................................

.............................

4-3
4-4

4-6
4-6

4-6

4-7

4-7

4-7

4-8

5-1
5-l

5-2
5-2

6-1

7A

78

6

MANUAL BACKDATING INFORMATION

THERMOCOUPLE REFERENCE TABLES

SCHEMATIC DIAGRAMS ............................................... 6-i

TABLE OFCONTENTS ......................................... 8-l

................................ 7A-1

................................ 78-l

ii

--

- .-

2190A

List of Tables

TABLE

I-1.

l-2.

1-3.
2-I.
2-2.
2-3.
4-1.
4-2.
4-3.
4-4.

4-5.

TITLE PAGE

219OA Options
2IWA Accessories
Specifications

..................................................

...............................................

...................................................

21WA Controls, Indicators, and Connectors
Thermocouple Input Module Switch Settings
T/C input Module Switch Functions

...............................

Line Voltage Selection Switches Positioning

Test Equipment Requirements

Performance Test Values
Bias Resistor Values

..................... ........................

219OA Troubleshooting

.....................................

.........................................

...........................................

.........................

........................

.........................

1-I

1-2

l-2
2-3
2-4
2-5

4-2
4-3
4-4
4-7
4-8

iii/ iv

2190A

List of Illustrations

FIGURE TITLE

Frontispiece

2-1.
2-2.
3-1.
3-2.
3-3.
4-1.

4-2.
4-3.

2 190A Digital Thermometer
Controls and Indicators

Thermocouple PCB Access
2190A Simplified Block Diagram
Measurement Cycle Waveforms
Simplified Schematic - Analog Section
Line Voltage Selection Switches
Equipment Connections
Calibration Adjustment Connections

.......................................

..........................................

........................................

....................................

..........................................

..................................

.............................

...................................

...............................

PAGE

;:2
2-4
3-1
3-3

3-4
4-2
4-3
4-6

\’

2190A

279OA Digital

Thermometer

2190A

Section 1

Introduction & Specifications

l-l. lNTRODUCTlON

1-2. The Model 2190A Digital Thermometer is a
portable, stackable, five digit, thermocouple
thermometer capable of temperature measurements over

a range of -252” C to +247 1°C (-486“ F to i-4480” F) with

a resolution of 0.1”. The instrument features automatic
reference-junction compensation, eliminating the
requirement for an ice bath reference-junction; front

panel switch selection of Fahrenheit or Celsius readings;

switch selectable thermocouple inputs; switch selectable
input line voltage; dual-slope measurement techniques;

and digital linearization (microcomputer controlled) of

the thermocouple inputs.
l-3. The instrument display has six high-intensity, seven

segment LEDs, and leading zero suppression. Five of the

LEDs are used to display numeric data, including a minus
sign for negative temperature readings. The remaining
LED displays the selected temperature scale character

(OF or “C). The symbol “O.C.“is displayed when an open­thermocouple is detected at the thermocouple input
terminals.

l-4. Screw-type input connectors, on a removable

module, are provided for attaching the selected
thermocouple. The terminals are an integral part of an
isothermal block which serves as a portion of the

reference-junction compensation circuit. This circuit

removes the need for an ice bath reference junction (O°C
or 32°F) since it provides the electrical equivalent
automatically.

l-6. The measurement range of the 2190A is determined
by the type of thermocouple used as the input device. The
type of microcomputer installed in your instrument will
determine the type of thermocouples that may be used.

The specifications table identifies the type of
thermocouples that are presently available for use in the

2190A, and Section 2 gives the procedure for identifying

the microcomputer type. The version required must be
specified when ordering the instrument. Choice of the
thermocouple type is accomplished by selecting the
applicable switch position
module using the table printed beside the switch on the
pcb. Recalibration is not required if the thermocouple
type is changed.

The letter C is not an ISA/ANSI

thermocouple desgnation. C is

convenience on!y to represent Tungsten-So/o

Rhenium versus Tungsten-26% Rhenium

allo>!.

l-7. The instrument is in a PTI (Portable Test

Instrument) case. This lightweight, durable plastic case

makes the instrument truly portable when used with the

Y2003 or Y2009 external power sources and can be

stacked for one handle portability.

l-8. Options and accessories available for the 2190A are

listed in Tables l-l and l-2 respectively. Detailed

information concerning each item listed is given in
Section 6 of this manual, Option and Accessory
Information.

NOTE

on

the removable input

used for

l-5. Selection of the temperature scale for display is
made with a front panel pushbutton. The scale selected,
Celsius or Fahrenheit, is displayed as either the character
OC or o F as the last character in the temperature reading.
A scale change can be made at any time, and has no effect
on the calibration of the instrument.

Table l-l. 2190A Options

j::::,

l-1