Hach 900 manual Section Explanations of Program Messages

Section 4

4.5 Explanations of Program Messages

Item	Message	Description of Message
Number
1	READY TO START	Indicates that a program is ready to start. To start, press START PROGRAM.
2	PROGRAM HALTED	Indicates the sampling program has been interrupted.
		Indicates that a program is in process. Keys 0, 1 and 2 are the only active keys while a
3	PROGRAM RUNNING	program is running. If running, halt the program (press HALT PROGRAM) before entering
		a new program.
4	PROGRAM COMPLETE	This message is displayed after program completion. To repeat the program, press
		START PROGRAM. Press NEW PROGRAM to enter a different program.
5	RE-ENTER PROGRAM,	When the sampler is on, this message will appear if the sampler was turned off during
	DEPRESS *	program entry.
		This is the first message in the programming sequence. If selected, the sampler will
6	PROGRAM DELAY	start only after the delay period elapses. A YES response causes message 6a to appear
		on the display.
6a	10:35 AM 21JUL03	A time and date are displayed when YES is pressed in response to message 6. The
		example to the left signifies 10:35 in the morning, on October 24, 2000.
		If selected, the sampler will operate on a timed cycle basis. Press YES to prompt the
7	TIMED MODE	user to enter the number of minutes desired for the time interval between samples.
		Press NO to prompt the question described in item 8.
7a	INTV = _ _ _ _MIN	Enter the value for the interval between samples (in minutes).
		Press YES, the cause the sampler to operate on a flow proportional basis. It will prompt
8	FLOW MODE?	the you to enter the number of flow signals that you want the sampler to count down
		between samples. Press NO to prompt the question in item 7.
		Enter the value for the number of pulses (counts) that you want to accumulate between
8a	INTV = _ _ _ _CNTS	samples. To determine the appropriate number, refer to the programming instructions
		for flow proportional operation in section 4.11.
		Press NO to retain the previously entered program entries for all remaining programming
9	OTHER CHANGES	steps, and return to the "Ready to Start" standby state. Press YES to change the
		previously programmed entries for all items 10 through 16.
		This message appears if only one bottle is entered for the total number of bottles in the
		parameter entry mode. Press YES to the "Continuous Mode?" prompt to take samples at
10	COMPOSITE MODE,	the programmed interval. The program will terminate only with a full bottle when using
	CONTINUOUS MODE	the full bottle float switch (Cat. No. 8847). Press NO to cause the display to read
		"samples = _ _ _". This permits you to enter the desired number of samples, after which
		the program will terminate.
11	CHANGE VOLUME?	Press NO to retain the sample volume from the previous program (programming items
		13, a–h are skipped), and the display will prompt the message in item 14.
12	SAMPLE VOL = _ _ _	Enter the desired sample volume (in mL) to be delivered to the sample container each
		time a sample is initiated.
13	CALIBRATE VOL?	This message appears after you enter sample volume. If greater volume accuracy is
		desired, press YES. Press NO to skip the calibration and go to the next step.
		When YES is pressed the sampler will pump to collect one sample. The pump will first
13a	READY TO PUMP?	pre-purge the intake line, draw sample liquid, and then post-purge.
		Before pressing YES, pull the pump tubing off of the fitting where it enters the sampler
		housing and place a graduated cylinder at the sample discharge point.
		After pressing YES in response to item 13a, the pump will pre-purge the intake line and
		begin pumping liquid into the graduated container. When the desired volume has been
13b	STOP AT MARK	delivered, press STOP PUMP. The pump will then purge the intake tubing. The sampler
		will hold the time to deliver the desired sample volume in memory. This timed volume is
		repeated for subsequent samples.
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Explanations of Program Messages		8544operations.fm