Electrics

I have placed this under New as it is new to me, though decades old in the workings.

Test Set No.1 is a military version of Model 8 Mark 2 housed in a radiation protective steel case. It incorporates a fuse on low ohms ranges. The ranges are from 3-10 instead of 2.5-10 with top terminals respectiveley at 3000v. There is no dB scale and the resistance scale is located at the bottom. There are no LR or Ins options.

Ranges :-

DC 3, 10, 30, 100, 300, 600, 1000, 3000 volts - sensitivity 50 uA
DC 0.05, 0.3, 1, 10, 100 mA, 1, 10 A
AC 3, 10, 30, 100, 300, 1000, 3000 volts - sensitivity: 1 mA on 100+ volts, 3 mA on 30, 10 mA on 10, 30 mA on 3
AC 10, 100 mA, 1, 10 A
R 2k, 200k, 20 M ohm (20, 2k, 200k ohm center)

See also :richardsradios.co.uk

. . .
However, the AVOmeter HR had additional 2500 V (AC) and (DC) ranges which used the corresponding 1000 V ranges, and were connected through two additional terminals at the top corners of the front panel. This feature was continued in the Model 8 and, with an increase to 3000 V to match their 1 - 3 - 10 ranges sequence, in the Model 9, Marks II and IV and the Model 8 Mark V. The 3000 V ranges were deleted in the Model 8 Marks 6 and 7 due to concerns for compliance with contemporary safety standards.

. . .

With the DC switch set to its "AC" position and the AC switch set to "DC", no current can flow through the instrument. However whenever any moving coil instrument is likely to be subjected to heavy shock in transit, it is good practice to damp the movement by short circuiting the moving coil using a heavy gauge wire connected across the terminals. On earlier Avometers, this may be done by short-circuiting the input terminals and selecting the most sensitive direct current range. The Model 8 Mark V, 6 & 7 were provided with an "OFF" position on the DC switch which both disconnected the meter's terminals and short-circuited the moving coil.
wikipedia.org/wiki/Avometer

Documents:
User Manual :: Service Manual :: Circuit Diagram :: For images of the innards see Comments, 1,2 &3

Just started: User name :: Roger

Archive to 2018 :: Victron On-line discussion/blog

Current :: https://community.victronenergy.com/index.html

31st December : : ML V=11.03 :: Y=40Wh
30th December :: ML V=12.40 ↖ Y=120Wh
29th December :: ML V=9.84 ↖ Y=370Wh
28th December :: ML V=10.28 ↖ Y=80Wh
27th December :: ML V=11.24 ↖ Y=80Wh
26th December :: ML V=12.39 ↖ Y=210Wh
25th December :: ML V=12.28 ↖ Y=790Wh
24th December :: ML V=11.74 ↖ Y=220Wh
23rd December :: ML V=12.28 ↖ Y=310Wh
22nd December : ML V=9.46 ↖ Y=450Wh
21st December :: ML V=12.23 ↖ Y=90Wh
20th December :: ML V=9.58 ↖ Y=330Wh
19th December :: ML V=12.29 ↖ Y=20Wh
18th December :: ML V=12.30 ↖ Y=30Wh
17th December :: ML V=12.09 ↖ Y=710Wh
16th December :: ML V=12.24 ↖ Y=270Wh
15th December :: ML V=12.40 ↖ Y=440Wh
14th December :: ML V=11.94 ↖ Y=760Wh
13th December :: ML V=11.54 ↖ Y=520Wh
12th December :: ML V=12.52 ↖ Y=180Wh
11th December :: ML V=12.43 ↖ Y=390Wh
10th December : ML V=12.55 ↖ Y=10Wh
9th December ::: ML V=12.47 ↖ Y=890Wh
8th December ::: ML V=12.16 ↖ Y=450Wh
7th December ::: ML V=12.22 ↖ Y=240Wh
6th December ::: ML V=12.37 ↖ Y=170Wh
5th December ::: ML V=12.48 ↖ Y=200Wh
4th December ::: ML V=12.52 ↖ Y=570Wh
3rd December ::: ML V=12.36 ↖ Y=940Wh
2nd December :: ML V=12.24 ↖ Y=990Wh
1st December ::: ML V=10.21 ↖ Y=650Wh

30th November : ML V=10.05 :: Y=130Wh
29th November : ML V=12.05 ↖ Y=110Wh
28th November : ML V=12.44 ↖ Y=250Wh
27th November : ML V=12.05 ↖ Y=150Wh
26th November : ML V=12.29 ↖ Y=310Wh
25th November : ML V=12.81 ↖ Y=150Wh
24th November : ML V=12.83 ↖ Y=110Wh
23rd November : ML V=12.81 ↖ Y=140Wh
22nd November  ML V=12.71 ↖ Y=100Wh
21st November : ML V=12.52 ↖ Y=90Wh
20th November : ML V=12.15 ↖ Y=420Wh
19th November : ML V=12.36 ↖ Y=210Wh
18th November : ML V=12.32 ↖ Y=1.0KWh
17th November : ML V=12.56 ↖ Y=590Wh
16th November : ML V=12.58 ↖ Y=770Wh
15th November : ML V=12.23 ↖ Y=740Wh
14th November : ML V=12.24 ↖ Y=110Wh
13th November : ML V=12.42 ↖ Y=260Wh
12th November : ML V=12.52 ↖ Y=760Wh
11th November : ML V=12.31 ↖ Y=720Wh
10th November : ML V=12.28 ↖ Y=610Wh
9th November ::: ML V=12.27 ↖ Y=440Wh
8th November ::: ML V=12.42 ↖ Y=780Wh
7th November ::: ML V=12.28 ↖ Y=970Wh
6th November ::: ML V=12.28 ↖ Y=520Wh
5th November ::: ML V=12.51 ↖ Y=510Wh
4th November ::: ML V=12.47 ↖ Y=650Wh
3rd November ::: ML V=12.03 ↖ Y=560Wh
2nd November :: ML V=11.97 ↖ Y=100Wh
1st November ::: ML V=11.92 ↖ Y=110Wh

31st October :: ML V=12.00 :: Y=120Wh
30th October :: ML V=12.23 :: Y=80Wh Left router on all night
29th October :: ML V=12.39 :: Y=120Wh Removed Batt 3
28th October : ML V=12.56 :: Y=370Wh Remove Batt 3
27th October :: ML V=12.27 :: Y=1.22KWh Remove Batt 3
26th October :: ML V=12.34 :: Y=110Wh Remove Batt 3
25th October : ML V=12.31 :: Y=70Wh Remove Batt 3
24th October :: ML V=12.44 :: Y=960Wh Remove Batt 3
23rd October :: ML V=12.44 :: Y=900Wh Remove Batt 3
22nd October : ML V=12.46 :: Y=690Wh Remove Batt 3
21st October :: ML V=12.47 :: Y=940Wh Remove Batt 3
20th October :: ML V=12.32 :: Y=1.33KWh Remove Batt 3
19th October :: ML V=12.32 :: Y=940Wh Remove Batt 3
18th October :: ML V=12.36 :: Y=790Wh Remove Batt 3
17th October :: ML V=12.19 :: Y=870Wh Remove Batt 3
16th October :: ML V=12.32 :: Y=650Wh Remove Batt 3
15th October :: ML V=12.16 :: Y=980Wh Remove Batt 3
14th October :: ML V=11.59 :: Y=270Wh Remove Batt 3
13th October :: ML V=12.32 :: Y=680Wh Remove Batt 3
12th October :: ML V=12.33 :: Y=320Wh Remove Batt 3
11th October :: ML V=12.40 :: Y=100Wh Remove Batt 3
10th October : ML V=12.60 :: Y=520Wh Remove Batt 3
9th October ::: ML V=12.56 :: Y=1.07KWh Remove Batt 3
8th October ::: ML V=12.56 :: Y=1.08KWh Remove Batt 3
7th October ::: ML V=12.63 :: Y=180Wh Remove Batt 3
6th October ::: ML V=12.49 :: Y=1.41KWh Remove Batt 3
5th October ::: ML V=12.71 :: Y=540Wh Remove Batt 3
4th October ::: ML V=12.67 :: Y=910Wh Remove Batt 3
3rd October ::: ML V=12.56 :: Y=610Wh Remove Batt 3
2nd October :: ML V=12.64 :: Y=1.70KWh Remove Batt 3
1st October ::: ML V=12.51 :: Y=840Wh Remove Batt 3

30th September :: ML V=12.66 :: Y=230Wh Remove Batt 3
29th September :: ML V=12.52⇖Y=710Wh Remove Batt 3
28th September :: ML V=12.48⇖Y=440Wh Remove Batt 3
27th September :: ML V=12.63⇖Y=590Wh Remove Batt 3
26th September :: ML V=12.44⇖Y=910Wh Remove Batt 3
25th September :: ML V=12.61⇖Y=310Wh
24th September :: ML V=12.59⇖Y=930Wh
23rd September :: ML V=12.69⇖Y=270Wh
22nd September : ML V=12.55⇖Y=760Wh
21st September :: ML V=12.48⇖Y=940Wh
20th September :: ML V=12.36⇖Y=1.86KWh
19th September :: ML V=12.52⇖Y=1.83KWh
18th September :: ML V=12.44⇖Y=1.83KWh
17th September :: ML V=12.66⇖Y=1.72KWh
16th September :: ML V=12.44⇖Y=570Wh
15th September :: ML V=12.56⇖Y=1.72KWh
14th September :: ML V=12.64⇖Y=1.80KWh
13th September :: ML V=12.51⇖Y=1.62KWh
12th September :: ML V=12.48⇖Y=820Wh
11th September :: ML V=12.51⇖Y=370Wh
10th September :: ML V=12.60⇖Y=1.64KWh
9th September ::: ML V=12.52⇖Y=420Wh
8th September ::: ML V=12.51⇖Y=1.05KWh
7th September ::: ML V=12.55⇖Y=1.03KWh
6th September ::: ML V=12.59⇖Y=570Wh
5th September ::: ML V=12.84⇖Y=1.55KWh :: Checked electrolyte level and worse than expected, given the warning signs of high ML. Battery 3 alone was very low and took over 100ml each cell, most of which didn't even cover with nigh on that much water. Battery 3 was in the middle of two other ||| and therefore was warmer ??
4th September ::: ML V=12.67⇖Y=1.40KWh :: check electrolyte level
3rd September ::: ML V=12.87⇖Y=900Wh :: check electrolyte level
2nd September :: ML V=12.71⇖Y=1.03KWh :: check electrolyte level
1st September ::: ML V=12.54⇖Y=1.58KWh :: 12.54 left router on all night :: check electrolyte level