Chi Tai cases
There are at least three different types of Chi Tai case used on Nordhavns. If you are ordering a 2022 rotary switch panel meter, please put the case style required in the "Order special instructions" box of the shopping cart page or send an email to nordybits@gmail.com
The 2023 touch sensor meters fit both styles of DM7xx cases without adjustment.
DM3xx
Some very early boats used the DM3xx series. They have a much larger front bezel that is 96mm x 48mm. At this time, I don't have a product that fits inside these cases, but if there is a demand I could adapt the design.
DM7xx
Most boats use the DM7xx meters with a 72mm x 36mm front bezel. These come in two types.
Screw clamp
From roughly 2004 to 2010, Chi Tai used a case with a metal screw clamp to secure it to the panel. The red Perspex on the front is opaque and has a matt finish. Shown on the left below.
Slide clamp
By 2010 Chi Tai were starting to use a new case design with plastic slide clamps. The Perspex is a transparent deep red with a gloss finish. Shown on the right below.
The inside of a slide clamp case is a very slightly different size and shape. The rear right (socket end, opposite side to the rotary switch) is 1.1mm narrower but the front (display end) is the same size. If you order a metal screw clamp board by mistake, it is straightforward to adjust it to fit inside a plastic slide clamp case. In a well ventilated area, use a piece of sandpaper on a flat surface to gently sand off a slight triangle from the long length to reduce the width until it fits in comfortably.
Sometimes the hot melt glue that holds the display in place may slightly foul the plastic case of the slide clamp. It needs to be gently warmed to make is soft and then pressed back to flatten it.
I will make sure the meter fits the slide clamp case if you notify me when you order.
Display brightness
Later Chi Tai boards used a brighter LED which, when combined with a transparent Perspex produced a much brighter display. As supplied, my meters match the dimmer displays of earlier boards. The brightness of my AC ammeter and AC voltmeter can be adjusted by the user but the current DC board does not allow user adjustment. If you want a brighter display, let me know and I can adjust the software on your boards. Be aware that bright displays use more than double the power of the dim setting.
The brightness is easily adjusted on the 2023 touch sensor boards.