Archive:CALMU3

Calmu3 (possibly Calmu3+) from Polymeters Response International. "The first microprocessor-based meter", using "FFT, rather than 'brute-force' DSP" [1]

I think I read somewhere that Calmu3 (minus the +) lacks CoP5 approval.

It may need calibration periodically, but that's probably up to the supplier.

Details

• Serial no: P99A01869
• Part no: C3DBD0BC0SJ (3 phase direct, class 1 accuracy, lithium backup, ?)

Interfaces

• Infrared PACT port (this is a standard - possible adapter)
• Serial port ("for PC, modem or PACTLAN")

Software with support

• Principal (DOS) or Ease II (can't get this to run on XP due to .vbx; probably needs 2000; uses stopcopy protection) from PRI
• mv-rs, and possibly other Itron stuff
• Ziphany http://www.ziphany.com/Files/Supported_Meters.pdf

Resources

A later model, with overview.

Presumably ex-PRI consultant on Calmu meters

Serial protocol

1200bps ASCII, \r terminated

Equals symbols are shown on some variables, but presumably wouldn't fit for many.

Once a 'N', 's', 'u' or 'x' are matched, all the remainder of the line is ignored. This suggests they might be for switching to a different protocol, or buggy code. 'u' is definitely buggy.

Commands

F	Frequency, updated per sample	"F=50.138\r"
N	Switch protocol?	ff
R	(Real?) time	"R=15:00:40\r"
S	Serial number (presumably "=" doesn't fit)	"SP99A01869\r"
s	?	"s=", dword 0xa605019e, dword 0, "\r"
u	(probably unimplemented)	"U\r"
x	Switch protocol?	ff
B[AVWvw]	?	BAA3123B BV182B85 BW918D2F Bv05B6CE Bw01B525
I[123]	Current	I1+15.230 I2+0.0000 I3-0.0300
K[123AVW]	?	K1+2.0700 K2+0.0000 K3+0.0100 KA+2.0600 KV-1.3300 KW+1.6300
L[123]	Load?	L1+9.0200 L2+0.0100 L3+0.0200
P[123]	?	P1+1.6400 P2-0.0000 P3+0.0000
Q[123A]	?	Q1=0.769- Q2=1.000+ Q3=1.000+ QA=0.787-
U[AVWvw]	Units	UA=2631984 UV=0349470 UW=2549220 Uv=0177551 Uw=0000001
V[123]	Voltage	V1+236.75 V2+240.72 V3+242.45
i[123]	Current?	i1-5.6300 i2-0.0000 i3-0.0100
p[123]	?	p1-1.3400 p2+0.0000 p3-0.0100
u[AVWvw]	?	UA=2631986 UV=0349470 UW=2549221 Uv=0177552 Uw=0000001
	?