The second byte contains the detector currently in use:
Bit 7:
measuring quantity: 1 = 6150AD »/E« model (6150ADx/E)
0 = other (6150ADx or 6150ADx/H)
Bit 6:
type of internal tube: 0 = ZP1200 (6150AD2/4/6)
1 = ZP1310 (6150AD1/3/5)
Bit 0-5:
detector in use:
0 = probe 6150AD-0
7 = probe 6150AD-b
15 = probe 6150AD-15
17 = probe 6150AD-17
18 = probe 6150AD-18
19 = probe 6150AD-19
20 = 6150AD internal tube
21 = probe 6150AD-t, low range tube
22 = probe 6150AD-t, high range tube
If bit 7 is equal to 1 (6150AD »/E« model), this necessarily means that, if a Sv-probe is connected, that
probe will also be a »/E« model, because the 6150ADx/E does not accept other Sv-probes.
Bytes 3 through 5 contain the current dose rate as a floating point number. The unit is always µSv/h, even
if the 6150AD is set to R units, and S
-1
for pulse probes. Dose rate consists of a signed 8-bit exponent on
the base of 2 (exponent range -128 to +127) and an unsigned (positive) 16-bit mantissa (range 4000H to
7FFFH, 0000H for zero) with the weight of 2
-15
. The following BASIC program fragment shows how to
convert the three bytes MLO, MHI, and EXP to dose rate DR (in µSv/h or S
-1
):
IF EXP > 127 THEN EXP = EXP - 256
MANT = MHI * 256 + MLO
DL = MANT * 2^(EXP - 15)
The connecting cable EB84-0193 (optional accessory) allows to connect the 6150AD to the serial DB-9
COM port of a standard PC. Since the cable plugs in the 6150AD’s probe socket, it blocks that socket for
use with a probe. Therefore it has a third connector where a probe may be connected through a standard
probe cable. The sketch below explains how to use the cable.
PC
standard probe cable
probe (optional)
connecting cable »PC - 6150AD - probe«
DB-9
Automess part number EB84-0193
6150AD
03/2004
Operating Manual 6150AD
Page 47
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Telefon +49(0)6203-9503-00 http://www.automess.de
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